Merge pull request #5 from Senape3000/Waterfall_dev

.gitignore

@@ -10,4 +10,8 @@ releases/
 personal_docs/
 *.7z
 to-do/
-docs/session
+docs/session
+SDR/build
+SDR/dist
+SDR/upx
+SDR/sdr_launcher.spec

include/FileCommands.h

@@ -34,6 +34,7 @@ public:
         handler.registerCommand(0x0F, handleMoveFile);
         handler.registerCommand(0x10, handleSaveToSignalsWithName);
         handler.registerCommand(0x14, handleGetDirectoryTree); // Changed from 0x12 to avoid conflict with startJam
+        handler.registerCommand(0x18, handleFormatSDCard);
     }
     
 private:
@@ -747,6 +748,60 @@ public:
         return true;
     }
     
+    /**
+     * @brief Recursively remove a directory and all its contents.
+     *
+     * Walks the directory tree depth-first: deletes every file, recurses
+     * into sub-directories, then removes the now-empty directory itself.
+     *
+     * @param fs   Filesystem reference (SD or LittleFS).
+     * @param path Absolute path of the directory to remove.
+     * @return true if the directory and all children were deleted.
+     */
+    static bool removeDirectoryRecursive(fs::FS& fs, const char* path) {
+        File dir = fs.open(path);
+        if (!dir || !dir.isDirectory()) {
+            dir.close();
+            return false;
+        }
+
+        bool allOk = true;
+        File child = dir.openNextFile();
+        while (child) {
+            // Copy path before close — child.path() is an internal pointer
+            // that becomes invalid after child.close().
+            char childPathBuf[256];
+            strncpy(childPathBuf, child.path(), sizeof(childPathBuf) - 1);
+            childPathBuf[sizeof(childPathBuf) - 1] = '\0';
+            bool isDir = child.isDirectory();
+            child.close();
+
+            if (isDir) {
+                if (!removeDirectoryRecursive(fs, childPathBuf)) {
+                    ESP_LOGE("FileCmd", "Failed to remove dir: %s", childPathBuf);
+                    allOk = false;
+                    // Continue deleting other entries instead of aborting
+                }
+            } else {
+                if (!fs.remove(childPathBuf)) {
+                    ESP_LOGE("FileCmd", "Failed to remove file: %s", childPathBuf);
+                    allOk = false;
+                }
+            }
+            // Yield to prevent watchdog timeout on deep/large trees
+            vTaskDelay(1);
+            child = dir.openNextFile();
+        }
+        dir.close();
+
+        // Directory should now be empty — remove it
+        if (!fs.rmdir(path)) {
+            ESP_LOGE("FileCmd", "Failed to rmdir: %s", path);
+            return false;
+        }
+        return allOk;
+    }
+
     static bool handleRemoveFile(const uint8_t* data, size_t len) {
         if (len < 2) {
             sendBinaryFileActionResult(1, false, 1); // 1=delete, error 1=insufficient data
@@ -778,7 +833,7 @@ public:
         
         bool ok = false;
         if (isDirectory) {
-            ok = fs.rmdir(pathBuffer.c_str());
+            ok = removeDirectoryRecursive(fs, pathBuffer.c_str());
         } else {
             ok = fs.remove(pathBuffer.c_str());
         }
@@ -786,6 +841,111 @@ public:
         sendBinaryFileActionResult(1, ok, ok ? 0 : 4, pathBuffer.c_str()); // error 4=delete failed
         return ok;
     }
+
+    /**
+     * @brief Format SD card: recursively delete all contents and re-create
+     *        the default directory structure.
+     *        Sends progressive feedback (errorCode 0xFF = in-progress step).
+     *
+     * Payload: [0x46][0x53] ('FS') as confirmation guard — prevents
+     * accidental invocation.
+     */
+    static bool handleFormatSDCard(const uint8_t* data, size_t len) {
+        // Require 2-byte confirmation payload 'FS' (Format SD)
+        if (len < 2 || data[0] != 0x46 || data[1] != 0x53) {
+            ESP_LOGW("FileCmd", "Format SD rejected: missing confirmation 'FS'");
+            sendBinaryFileActionResult(8, false, 1); // actionType 8 = format
+            return false;
+        }
+
+        ESP_LOGW("FileCmd", "FORMAT SD CARD — deleting all contents");
+
+        // Phase 1: notify app that format has started
+        sendBinaryFileActionResult(8, true, 0xFF, "Starting format...");
+        vTaskDelay(pdMS_TO_TICKS(50)); // Let BLE send the notification
+
+        // Phase 2: recursively delete every entry in SD root
+        File root = SD.open("/");
+        if (!root || !root.isDirectory()) {
+            ESP_LOGE("FileCmd", "Cannot open SD root");
+            sendBinaryFileActionResult(8, false, 2);
+            return false;
+        }
+
+        bool allOk = true;
+        int deletedCount = 0;
+        File child = root.openNextFile();
+        while (child) {
+            // Copy path to local buffer before close — child.path()
+            // returns an internal pointer invalidated by close().
+            char childPathBuf[256];
+            strncpy(childPathBuf, child.path(), sizeof(childPathBuf) - 1);
+            childPathBuf[sizeof(childPathBuf) - 1] = '\0';
+            bool isDir = child.isDirectory();
+            child.close();
+
+            // Send progress notification for each item being deleted
+            char progressMsg[280];
+            snprintf(progressMsg, sizeof(progressMsg), "Deleting: %s", childPathBuf);
+            sendBinaryFileActionResult(8, true, 0xFF, progressMsg);
+            vTaskDelay(pdMS_TO_TICKS(20)); // Let BLE send + prevent WDT
+
+            if (isDir) {
+                if (!removeDirectoryRecursive(SD, childPathBuf)) {
+                    ESP_LOGE("FileCmd", "Failed to remove dir: %s", childPathBuf);
+                    allOk = false;
+                }
+            } else {
+                if (!SD.remove(childPathBuf)) {
+                    ESP_LOGE("FileCmd", "Failed to remove file: %s", childPathBuf);
+                    allOk = false;
+                }
+            }
+            deletedCount++;
+            // Yield to prevent watchdog timeout during format
+            vTaskDelay(1);
+            child = root.openNextFile();
+        }
+        root.close();
+
+        ESP_LOGI("FileCmd", "Deleted %d items from SD root", deletedCount);
+
+        // Phase 3: re-create default directory structure with progress and verification
+        static const char* defaultDirs[] = {
+            "/DATA",
+            "/DATA/RECORDS",
+            "/DATA/SIGNALS",
+            "/DATA/PRESETS",
+            "/DATA/TEMP"
+        };
+        bool creationSuccess = true;
+        for (int i = 0; i < 5; i++) {
+            char progressMsg[280];
+            snprintf(progressMsg, sizeof(progressMsg), "Creating: %s", defaultDirs[i]);
+            sendBinaryFileActionResult(8, true, 0xFF, progressMsg);
+            vTaskDelay(pdMS_TO_TICKS(20));
+            
+            // Create directory and verify
+            if (!SD.mkdir(defaultDirs[i])) {
+                // mkdir returns false if directory already exists or creation failed
+                // Check if it exists to distinguish between these cases
+                if (!SD.exists(defaultDirs[i])) {
+                    ESP_LOGE("FileCmd", "Failed to create directory: %s", defaultDirs[i]);
+                    creationSuccess = false;
+                    allOk = false;
+                } else {
+                    ESP_LOGI("FileCmd", "Directory already exists: %s", defaultDirs[i]);
+                }
+            } else {
+                ESP_LOGI("FileCmd", "Created directory: %s", defaultDirs[i]);
+            }
+        }
+
+        ESP_LOGI("FileCmd", "SD card format %s", allOk ? "complete" : "completed with errors");
+        // Send final result (errorCode 0 = done successfully, 4 = done with errors)
+        sendBinaryFileActionResult(8, allOk, allOk ? 0 : 4);
+        return allOk;
+    }
     
     static bool handleRenameFile(const uint8_t* data, size_t len) {
         if (len < 3) {

include/config.h

@@ -7,9 +7,9 @@
 // - PATCH: Bug fixes, optimizations
 // The app will compare these values for FW update matching.
 #define FIRMWARE_VERSION_MAJOR 1
-#define FIRMWARE_VERSION_MINOR 0
-#define FIRMWARE_VERSION_PATCH 3
-#define FIRMWARE_VERSION_STRING "1.0.3"
+#define FIRMWARE_VERSION_MINOR 1
+#define FIRMWARE_VERSION_PATCH 0
+#define FIRMWARE_VERSION_STRING "1.1.0"
 
 #define CC1101_NUM_MODULES 2
 

mobile_app/ios/Flutter/Generated.xcconfig

@@ -1,11 +1,11 @@
 // This is a generated file; do not edit or check into version control.
 FLUTTER_ROOT=C:\Flutter\flutter
-FLUTTER_APPLICATION_PATH=C:\Users\Andrea\VSCode_project\EvilCrow-V2\mobile_app
+FLUTTER_APPLICATION_PATH=C:\Users\Andrea\VSCode_project\EvilCrow-RF-V2\EvilCrowRF-V2\mobile_app
 COCOAPODS_PARALLEL_CODE_SIGN=true
 FLUTTER_TARGET=lib\main.dart
 FLUTTER_BUILD_DIR=build
-FLUTTER_BUILD_NAME=1.1.0
-FLUTTER_BUILD_NUMBER=6
+FLUTTER_BUILD_NAME=1.0.3
+FLUTTER_BUILD_NUMBER=16
 EXCLUDED_ARCHS[sdk=iphonesimulator*]=i386
 EXCLUDED_ARCHS[sdk=iphoneos*]=armv7
 DART_OBFUSCATION=false

mobile_app/ios/Flutter/flutter_export_environment.sh

@@ -1,12 +1,12 @@
 #!/bin/sh
 # This is a generated file; do not edit or check into version control.
 export "FLUTTER_ROOT=C:\Flutter\flutter"
-export "FLUTTER_APPLICATION_PATH=C:\Users\Andrea\VSCode_project\EvilCrow-V2\mobile_app"
+export "FLUTTER_APPLICATION_PATH=C:\Users\Andrea\VSCode_project\EvilCrow-RF-V2\EvilCrowRF-V2\mobile_app"
 export "COCOAPODS_PARALLEL_CODE_SIGN=true"
 export "FLUTTER_TARGET=lib\main.dart"
 export "FLUTTER_BUILD_DIR=build"
-export "FLUTTER_BUILD_NAME=1.1.0"
-export "FLUTTER_BUILD_NUMBER=6"
+export "FLUTTER_BUILD_NAME=1.0.3"
+export "FLUTTER_BUILD_NUMBER=16"
 export "DART_OBFUSCATION=false"
 export "TRACK_WIDGET_CREATION=true"
 export "TREE_SHAKE_ICONS=false"

mobile_app/lib/l10n/app_en.arb

@@ -118,6 +118,7 @@
     }
   },
   "unknownDevice": "Unknown Device",
+  "noSupportedDevicesShowAll": "No supported devices found. Select your device manually:",
   
   "notConnectedToDevice": "Not connected to device",
   "connectToDeviceToManageFiles": "Connect to a device to manage files",
@@ -1054,6 +1055,7 @@
   "appSettings": "App Settings",
   "appSettingsSubtitle": "Language, cache, permissions",
   "rfSettings": "RF Settings",
+  "rfSettingsSubtitle": "Bruteforce, Radio & Scanner settings",
   "syncedWithDevice": "Synced with device",
   "localOnly": "Local only",
   "bruteforceSettings": "Bruteforce Settings",

mobile_app/lib/l10n/app_localizations.dart

@@ -362,6 +362,12 @@ abstract class AppLocalizations {
   /// **'Unknown Device'**
   String get unknownDevice;
 
+  /// No description provided for @noSupportedDevicesShowAll.
+  ///
+  /// In en, this message translates to:
+  /// **'No supported devices found. Select your device manually:'**
+  String get noSupportedDevicesShowAll;
+
   /// No description provided for @notConnectedToDevice.
   ///
   /// In en, this message translates to:
@@ -2654,6 +2660,12 @@ abstract class AppLocalizations {
   /// **'RF Settings'**
   String get rfSettings;
 
+  /// No description provided for @rfSettingsSubtitle.
+  ///
+  /// In en, this message translates to:
+  /// **'Bruteforce, Radio & Scanner settings'**
+  String get rfSettingsSubtitle;
+
   /// No description provided for @syncedWithDevice.
   ///
   /// In en, this message translates to:

mobile_app/lib/l10n/app_localizations_en.dart

@@ -165,6 +165,10 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get unknownDevice => 'Unknown Device';
 
+  @override
+  String get noSupportedDevicesShowAll =>
+      'No supported devices found. Select your device manually:';
+
   @override
   String get notConnectedToDevice => 'Not connected to device';
 
@@ -1492,6 +1496,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get rfSettings => 'RF Settings';
 
+  @override
+  String get rfSettingsSubtitle => 'Bruteforce, Radio & Scanner settings';
+
   @override
   String get syncedWithDevice => 'Synced with device';
 

mobile_app/lib/l10n/app_localizations_ru.dart

@@ -167,6 +167,10 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get unknownDevice => 'Неизвестное устройство';
 
+  @override
+  String get noSupportedDevicesShowAll =>
+      'Устройства не распознаны. Выберите вручную:';
+
   @override
   String get notConnectedToDevice => 'Не подключено к устройству';
 
@@ -1499,6 +1503,9 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get rfSettings => 'Настройки RF';
 
+  @override
+  String get rfSettingsSubtitle => 'Брутфорс, радио и сканер';
+
   @override
   String get syncedWithDevice => 'Синхронизировано с устройством';
 

mobile_app/lib/l10n/app_ru.arb

@@ -105,6 +105,7 @@
     }
   },
   "unknownDevice": "Неизвестное устройство",
+  "noSupportedDevicesShowAll": "Устройства не распознаны. Выберите вручную:",
   
   "notConnectedToDevice": "Не подключено к устройству",
   "connectToDeviceToManageFiles": "Подключитесь к устройству для управления файлами",
@@ -1040,6 +1041,7 @@
   "appSettings": "Настройки приложения",
   "appSettingsSubtitle": "Язык, кэш, разрешения",
   "rfSettings": "Настройки RF",
+  "rfSettingsSubtitle": "Брутфорс, радио и сканер",
   "syncedWithDevice": "Синхронизировано с устройством",
   "localOnly": "Только локально",
   "bruteforceSettings": "Настройки брутфорса",

mobile_app/lib/providers/ble_provider.dart

@@ -104,7 +104,10 @@ class BleProvider extends ChangeNotifier {
   int currentPathType = 5; // 0=/DATA/RECORDS, 1=/DATA/SIGNALS, 2=/DATA/PRESETS, 3=/DATA/TEMP, 4=INTERNAL (LittleFS), 5=SD Root
   bool isLoadingFiles = false;
   double fileListProgress = 0.0; // Progress for file list loading (0.0 to 1.0)
-  
+  bool isFormattingSD = false;   // True while SD format command is in progress
+  bool sdFormatSuccess = false;  // Result of last SD format
+  String sdFormatProgress = '';  // Progress message during SD format (e.g. "Deleting: /somefile")
+
   // Scanner state
   List<DetectedSignal> detectedSignals = [];
   Map<String, double> frequencySpectrum = {};
@@ -694,6 +697,7 @@ class BleProvider extends ChangeNotifier {
     _resetConnectionState();
     _log('info', 'Disconnected from device');
     isLoadingFiles = false;
+    isFormattingSD = false;
     
     // Clear cache on disconnect
     _fileCache.clear();
@@ -1199,38 +1203,29 @@ class BleProvider extends ChangeNotifier {
   // Methods for working with files
   
   /// Reads file content from ESP
-  Future<String> readFileContent(String filePath, {String? basePath}) async {
+  Future<String> readFileContent(String filePath, {int? pathType}) async {
     if (!isConnected) {
       throw Exception('Device not connected');
     }
     
-    // Determine pathType based on basePath
-    int pathType = 0;  // Default to /DATA/RECORDS
-    String relativePath = filePath;
+    // Use provided pathType or default to RECORDS (0)
+    int effectivePathType = pathType ?? 0;
     
-    if (basePath == '/DATA/SIGNALS') {
-      pathType = 1;
-    } else if (basePath == '/DATA/PRESETS') {
-      pathType = 2;
-    } else if (basePath == '/DATA/TEMP') {
-      pathType = 3;
-    } else if (basePath == '/SDROOT') {
-      pathType = 5;
-    } else if (basePath == '/') {
-      pathType = 4; // LittleFS internal storage
+    // For pathType 0-3 (RECORDS, SIGNALS, PRESETS, TEMP), extract relative path
+    // because firmware adds /DATA/XXXX/ prefix automatically.
+    // For pathType 4-5 (LittleFS root, SD root), keep full absolute path.
+    String pathToUse = filePath;
+    if (effectivePathType >= 0 && effectivePathType < 4 && filePath.startsWith('/DATA/')) {
+      // Extract relative path from /DATA/RECORDS/... or /DATA/SIGNALS/...
+      final parts = filePath.split('/');
+      if (parts.length > 3) {
+        pathToUse = parts.sublist(3).join('/');
+      } else {
+        pathToUse = parts.last;
+      }
     }
     
-    // Remove /DATA/ prefix if present (shouldn't be, but handle it)
-    if (relativePath.startsWith('/DATA/')) {
-      relativePath = relativePath.substring(6); // Remove '/DATA/'
-    }
-    
-    // Remove leading slash if present
-    if (relativePath.startsWith('/')) {
-      relativePath = relativePath.substring(1);
-    }
-    
-    _log('INFO', 'Reading file content: $relativePath (pathType: $pathType, basePath: $basePath)');
+    _log('INFO', 'Reading file content: $pathToUse (pathType: $effectivePathType)');
     
     // Set loading flag
     isLoadingFileContent = true;
@@ -1243,9 +1238,9 @@ class BleProvider extends ChangeNotifier {
     final completer = Completer<String>();
     _pendingFileReadCompleter = completer;
     
-    // Use binary command with path type - pass full relative path including subdirectory
-    final command = FirmwareBinaryProtocol.createLoadFileDataCommand(relativePath, pathType: pathType);
-    _log('INFO', 'Sending binary command for file: $relativePath (pathType: $pathType, command length: ${command.length})');
+    // Use binary command with path type
+    final command = FirmwareBinaryProtocol.createLoadFileDataCommand(pathToUse, pathType: effectivePathType);
+    _log('INFO', 'Sending binary command for file: $pathToUse (pathType: $effectivePathType, command length: ${command.length})');
     
     // Send binary file read command
     await sendBinaryCommand(command);
@@ -1287,10 +1282,8 @@ class BleProvider extends ChangeNotifier {
     _log('INFO', 'Downloading file: $filePath');
     
     // Using readFileContent, which already uses binary protocol
-    // Determine pathType based on current path
     try {
-      final basePath = _getBasePathForPathType(currentPathType);
-      final content = await readFileContent(filePath, basePath: basePath);
+      final content = await readFileContent(filePath, pathType: currentPathType);
       
       // Call progress callback if available
       onProgress?.call(1.0);
@@ -2545,6 +2538,26 @@ class BleProvider extends ChangeNotifier {
           _handleFileUploadResponse(responseData);
         }
         
+        // Handle format-sd response
+        if (responseData.containsKey('action') && responseData['action'] == 'format-sd') {
+          print('Format SD response received: $responseData');
+          
+          // Check if this is a progress update (errorCode 0xFF) or final result
+          if (responseData['isProgress'] == true) {
+            // Progress update — update message but keep formatting state
+            sdFormatProgress = responseData['progressMessage']?.toString() ?? '';
+            _log('info', 'SD format progress: $sdFormatProgress');
+            notifyListeners();
+          } else {
+            // Final result
+            isFormattingSD = false;
+            sdFormatProgress = '';
+            sdFormatSuccess = responseData['success'] == true;
+            _log('info', 'SD format ${sdFormatSuccess ? 'succeeded' : 'failed'}');
+            notifyListeners();
+          }
+        }
+
         // Handle copy response
         if (responseData.containsKey('action') && responseData['action'] == 'copy') {
           print('Copy response received: $responseData');
@@ -2998,10 +3011,11 @@ class BleProvider extends ChangeNotifier {
       // Use provided pathType or current
       int effectivePathType = pathType ?? currentPathType;
       
-      // Use the filePath as-is (it should be a relative path like "folder/file.sub" or just "file.sub")
-      // Only extract filename if it's an absolute path starting with /DATA/
+      // For pathType 0-3 (RECORDS, SIGNALS, PRESETS, TEMP), extract relative path
+      // because firmware adds /DATA/XXXX/ prefix automatically.
+      // For pathType 4-5 (LittleFS root, SD root), keep full absolute path.
       String pathToUse = filePath;
-      if (filePath.startsWith('/DATA/')) {
+      if (effectivePathType >= 0 && effectivePathType < 4 && filePath.startsWith('/DATA/')) {
         // Extract relative path from /DATA/RECORDS/... or /DATA/SIGNALS/...
         final parts = filePath.split('/');
         if (parts.length > 3) {
@@ -3233,6 +3247,25 @@ class BleProvider extends ChangeNotifier {
     }
   }
 
+  /// Format SD card: recursively delete all contents and re-create defaults.
+  Future<bool> formatSDCard() async {
+    if (!isConnected || txCharacteristic == null) return false;
+    try {
+      final cmd = FirmwareBinaryProtocol.createFormatSDCommand();
+      isFormattingSD = true;
+      sdFormatSuccess = false;
+      notifyListeners();
+      await sendBinaryCommand(cmd);
+      _log('warning', 'Format SD command sent');
+      return true;
+    } catch (e) {
+      isFormattingSD = false;
+      notifyListeners();
+      _log('error', 'Failed to send format SD: $e');
+      return false;
+    }
+  }
+
   /// Start a bruter attack with the given menu choice (1-33)
   Future<void> sendBruterCommand(int menuChoice) async {
     if (!isConnected || txCharacteristic == null) {
@@ -3255,6 +3288,35 @@ class BleProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  /// Start a custom De Bruijn attack with per-protocol timing and frequency.
+  /// Uses firmware sub-command 0xFD to pass exact Te, ratio, bits, and
+  /// frequency instead of relying on hardcoded De Bruijn menus.
+  Future<void> sendCustomDeBruijnCommand({
+    required int bits,
+    required int te,
+    required int ratio,
+    required double frequencyMhz,
+  }) async {
+    if (!isConnected || txCharacteristic == null) {
+      _log('error', 'Cannot start custom De Bruijn: not connected');
+      throw Exception('Not connected');
+    }
+
+    _log('command', 'Starting custom De Bruijn: bits=$bits te=$te ratio=$ratio freq=$frequencyMhz');
+
+    final command = FirmwareBinaryProtocol.createCustomDeBruijnCommand(
+      bits: bits,
+      te: te,
+      ratio: ratio,
+      frequencyMhz: frequencyMhz,
+    );
+    await sendBinaryCommand(command);
+
+    _isBruterRunning = true;
+    _bruterActiveProtocol = 0xFD;
+    notifyListeners();
+  }
+
   /// Cancel a running bruter attack (STOP — clears saved state)
   Future<void> sendBruterCancelCommand() async {
     if (!isConnected || txCharacteristic == null) {

mobile_app/lib/providers/firmware_protocol.dart

@@ -69,6 +69,7 @@ class FirmwareBinaryProtocol {
   static const int MSG_REBOOT = 0x15;
   static const int MSG_FACTORY_RESET = 0x16;
   static const int MSG_SET_DEVICE_NAME = 0x17;
+  static const int MSG_FORMAT_SD = 0x18;
 
   // Bruter command
   static const int MSG_BRUTER = 0x04;
@@ -820,6 +821,31 @@ class FirmwareBinaryProtocol {
     return _createEnhancedCommand(MSG_BRUTER, payload);
   }
 
+  /// Create custom De Bruijn command (sub-command 0xFD) with per-protocol params.
+  /// Format: [0xFD][bits:1][teLo:1][teHi:1][ratio:1][freq:4LE float] (9 bytes)
+  /// This sends the correct timing and frequency for any protocol, avoiding
+  /// hardcoded De Bruijn menus (35-39) which use fixed frequencies.
+  static Uint8List createCustomDeBruijnCommand({
+    required int bits,
+    required int te,
+    required int ratio,
+    required double frequencyMhz,
+  }) {
+    final payload = Uint8List(9);
+    payload[0] = 0xFD; // Sub-command: custom De Bruijn
+    payload[1] = bits & 0xFF;
+    payload[2] = te & 0xFF;        // Te low byte
+    payload[3] = (te >> 8) & 0xFF; // Te high byte
+    payload[4] = ratio & 0xFF;
+    // IEEE 754 float, little-endian
+    final freqBytes = ByteData(4)..setFloat32(0, frequencyMhz, Endian.little);
+    payload[5] = freqBytes.getUint8(0);
+    payload[6] = freqBytes.getUint8(1);
+    payload[7] = freqBytes.getUint8(2);
+    payload[8] = freqBytes.getUint8(3);
+    return _createEnhancedCommand(MSG_BRUTER, payload);
+  }
+
   // ═══════════════════════════════════════════════════════════
   //  NRF24 Command Factories (0x20-0x2E)
   // ═══════════════════════════════════════════════════════════
@@ -1146,4 +1172,12 @@ class FirmwareBinaryProtocol {
     final payload = Uint8List.fromList([0x46, 0x52]); // 'F', 'R'
     return _createEnhancedCommand(MSG_FACTORY_RESET, payload);
   }
+
+  /// Format SD card (0x18)
+  /// Payload: [0x46][0x53] ('FS') as safety confirmation.
+  /// Recursively deletes all SD contents and re-creates default directories.
+  static Uint8List createFormatSDCommand() {
+    final payload = Uint8List.fromList([0x46, 0x53]); // 'F', 'S'
+    return _createEnhancedCommand(MSG_FORMAT_SD, payload);
+  }
 }

mobile_app/lib/providers/settings_provider.dart

@@ -54,7 +54,6 @@ class SettingsProvider with ChangeNotifier {
   int _nrfDataRate = 0;      // 0=1MBPS, 1=2MBPS, 2=250KBPS
   int _nrfChannel = 76;      // Default channel (0-125)
   int _nrfAutoRetransmit = 5; // Retransmit count (0-15)
-
   bool get debugMode => _debugMode;
   int get bruterDelayMs => _bruterDelayMs;
   int get bruterModule => _bruterModule;

mobile_app/lib/screens/brute_screen.dart

@@ -15,6 +15,10 @@ class BruterProtocol {
   final int bits;
   final String encoding;
   final IconData icon;
+  /// Timing element in microseconds (shortest pulse duration)
+  final int te;
+  /// Ratio of long pulse to short pulse (e.g. 3 means 1:3)
+  final int ratio;
 
   const BruterProtocol({
     required this.menuId,
@@ -24,6 +28,8 @@ class BruterProtocol {
     required this.bits,
     required this.encoding,
     required this.icon,
+    this.te = 300,
+    this.ratio = 3,
   });
 
   /// Whether this protocol uses De Bruijn mode (menu 35-40)
@@ -94,58 +100,58 @@ class BruterProtocol {
 /// All supported bruter protocols
 const List<BruterProtocol> bruterProtocols = [
   // EU Garage Remotes
-  BruterProtocol(menuId: 1, name: 'CAME', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 2, name: 'Princeton', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'tristate', icon: Icons.garage),
-  BruterProtocol(menuId: 3, name: 'NiceFlo', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 6, name: 'Holtek', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 8, name: 'Ansonic', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 11, name: 'FAAC', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 12, name: 'BFT', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 13, name: 'SMC5326', category: 'EU Garage', frequencyMhz: 433.42, bits: 12, encoding: 'tristate', icon: Icons.garage),
-  BruterProtocol(menuId: 14, name: 'Clemsa', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 15, name: 'GateTX', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 16, name: 'Phox', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 17, name: 'Phoenix V2', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 18, name: 'Prastel', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
-  BruterProtocol(menuId: 19, name: 'Doitrand', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage),
+  BruterProtocol(menuId: 1, name: 'CAME', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 320, ratio: 2),
+  BruterProtocol(menuId: 2, name: 'Princeton', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'tristate', icon: Icons.garage, te: 350, ratio: 3),
+  BruterProtocol(menuId: 3, name: 'NiceFlo', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 700, ratio: 2),
+  BruterProtocol(menuId: 6, name: 'Holtek', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 430, ratio: 2),
+  BruterProtocol(menuId: 8, name: 'Ansonic', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 555, ratio: 2),
+  BruterProtocol(menuId: 11, name: 'FAAC', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 400, ratio: 3),
+  BruterProtocol(menuId: 12, name: 'BFT', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 400, ratio: 2),
+  BruterProtocol(menuId: 13, name: 'SMC5326', category: 'EU Garage', frequencyMhz: 433.42, bits: 12, encoding: 'tristate', icon: Icons.garage, te: 320, ratio: 3),
+  BruterProtocol(menuId: 14, name: 'Clemsa', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 400, ratio: 2),
+  BruterProtocol(menuId: 15, name: 'GateTX', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 350, ratio: 2),
+  BruterProtocol(menuId: 16, name: 'Phox', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 400, ratio: 2),
+  BruterProtocol(menuId: 17, name: 'Phoenix V2', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 500, ratio: 2),
+  BruterProtocol(menuId: 18, name: 'Prastel', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 400, ratio: 2),
+  BruterProtocol(menuId: 19, name: 'Doitrand', category: 'EU Garage', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.garage, te: 400, ratio: 2),
 
   // US Garage Remotes
-  BruterProtocol(menuId: 4, name: 'Chamberlain', category: 'US Garage', frequencyMhz: 315.0, bits: 12, encoding: 'binary', icon: Icons.door_sliding),
-  BruterProtocol(menuId: 5, name: 'Linear', category: 'US Garage', frequencyMhz: 300.0, bits: 10, encoding: 'binary', icon: Icons.door_sliding),
-  BruterProtocol(menuId: 7, name: 'LiftMaster', category: 'US Garage', frequencyMhz: 315.0, bits: 12, encoding: 'binary', icon: Icons.door_sliding),
-  BruterProtocol(menuId: 23, name: 'Firefly', category: 'US Garage', frequencyMhz: 300.0, bits: 10, encoding: 'binary', icon: Icons.door_sliding),
-  BruterProtocol(menuId: 24, name: 'Linear MegaCode', category: 'US Garage', frequencyMhz: 318.0, bits: 24, encoding: 'binary', icon: Icons.door_sliding),
+  BruterProtocol(menuId: 4, name: 'Chamberlain', category: 'US Garage', frequencyMhz: 315.0, bits: 12, encoding: 'binary', icon: Icons.door_sliding, te: 430, ratio: 2),
+  BruterProtocol(menuId: 5, name: 'Linear', category: 'US Garage', frequencyMhz: 300.0, bits: 10, encoding: 'binary', icon: Icons.door_sliding, te: 500, ratio: 3),
+  BruterProtocol(menuId: 7, name: 'LiftMaster', category: 'US Garage', frequencyMhz: 315.0, bits: 12, encoding: 'binary', icon: Icons.door_sliding, te: 400, ratio: 2),
+  BruterProtocol(menuId: 23, name: 'Firefly', category: 'US Garage', frequencyMhz: 300.0, bits: 10, encoding: 'binary', icon: Icons.door_sliding, te: 400, ratio: 2),
+  BruterProtocol(menuId: 24, name: 'Linear MegaCode', category: 'US Garage', frequencyMhz: 318.0, bits: 24, encoding: 'binary', icon: Icons.door_sliding, te: 500, ratio: 2),
 
   // Home Automation
-  BruterProtocol(menuId: 20, name: 'Dooya', category: 'Home Auto', frequencyMhz: 433.92, bits: 24, encoding: 'binary', icon: Icons.blinds),
-  BruterProtocol(menuId: 21, name: 'Nero', category: 'Home Auto', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.blinds),
-  BruterProtocol(menuId: 22, name: 'Magellen', category: 'Home Auto', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.blinds),
+  BruterProtocol(menuId: 20, name: 'Dooya', category: 'Home Auto', frequencyMhz: 433.92, bits: 24, encoding: 'binary', icon: Icons.blinds, te: 350, ratio: 2),
+  BruterProtocol(menuId: 21, name: 'Nero', category: 'Home Auto', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.blinds, te: 450, ratio: 2),
+  BruterProtocol(menuId: 22, name: 'Magellen', category: 'Home Auto', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.blinds, te: 400, ratio: 2),
 
   // Alarm / Sensors
-  BruterProtocol(menuId: 9, name: 'EV1527', category: 'Alarm', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.security),
-  BruterProtocol(menuId: 10, name: 'Honeywell', category: 'Alarm', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.security),
-  BruterProtocol(menuId: 29, name: 'EV1527 24b', category: 'Alarm', frequencyMhz: 433.92, bits: 24, encoding: 'binary', icon: Icons.security),
+  BruterProtocol(menuId: 9, name: 'EV1527', category: 'Alarm', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.security, te: 320, ratio: 3),
+  BruterProtocol(menuId: 10, name: 'Honeywell', category: 'Alarm', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.security, te: 300, ratio: 2),
+  BruterProtocol(menuId: 29, name: 'EV1527 24b', category: 'Alarm', frequencyMhz: 433.92, bits: 24, encoding: 'binary', icon: Icons.security, te: 320, ratio: 3),
 
   // 868 MHz
-  BruterProtocol(menuId: 25, name: 'Hörmann', category: '868 MHz', frequencyMhz: 868.35, bits: 12, encoding: 'binary', icon: Icons.radio),
-  BruterProtocol(menuId: 26, name: 'Marantec', category: '868 MHz', frequencyMhz: 868.35, bits: 12, encoding: 'binary', icon: Icons.radio),
-  BruterProtocol(menuId: 27, name: 'Berner', category: '868 MHz', frequencyMhz: 868.35, bits: 12, encoding: 'binary', icon: Icons.radio),
+  BruterProtocol(menuId: 25, name: 'Hörmann', category: '868 MHz', frequencyMhz: 868.35, bits: 12, encoding: 'binary', icon: Icons.radio, te: 500, ratio: 2),
+  BruterProtocol(menuId: 26, name: 'Marantec', category: '868 MHz', frequencyMhz: 868.35, bits: 12, encoding: 'binary', icon: Icons.radio, te: 600, ratio: 2),
+  BruterProtocol(menuId: 27, name: 'Berner', category: '868 MHz', frequencyMhz: 868.35, bits: 12, encoding: 'binary', icon: Icons.radio, te: 400, ratio: 2),
 
   // Misc
-  BruterProtocol(menuId: 28, name: 'Intertechno V3', category: 'Misc', frequencyMhz: 433.92, bits: 32, encoding: 'binary', icon: Icons.power),
-  BruterProtocol(menuId: 30, name: 'StarLine', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key),
-  BruterProtocol(menuId: 31, name: 'Tedsen', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key),
-  BruterProtocol(menuId: 32, name: 'Airforce', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key),
-  BruterProtocol(menuId: 33, name: 'Unilarm', category: 'Misc', frequencyMhz: 433.42, bits: 12, encoding: 'binary', icon: Icons.key),
-  BruterProtocol(menuId: 34, name: 'ELKA', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key),
+  BruterProtocol(menuId: 28, name: 'Intertechno V3', category: 'Misc', frequencyMhz: 433.92, bits: 32, encoding: 'binary', icon: Icons.power, te: 250, ratio: 5),
+  BruterProtocol(menuId: 30, name: 'StarLine', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key, te: 500, ratio: 2),
+  BruterProtocol(menuId: 31, name: 'Tedsen', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key, te: 600, ratio: 2),
+  BruterProtocol(menuId: 32, name: 'Airforce', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key, te: 350, ratio: 3),
+  BruterProtocol(menuId: 33, name: 'Unilarm', category: 'Misc', frequencyMhz: 433.42, bits: 12, encoding: 'binary', icon: Icons.key, te: 350, ratio: 3),
+  BruterProtocol(menuId: 34, name: 'ELKA', category: 'Misc', frequencyMhz: 433.92, bits: 12, encoding: 'binary', icon: Icons.key, te: 400, ratio: 2),
 
   // De Bruijn protocols (~90x faster for binary ≤16 bits)
-  BruterProtocol(menuId: 35, name: 'DeBruijn Generic 433', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.bolt),
-  BruterProtocol(menuId: 36, name: 'DeBruijn Generic 315', category: 'De Bruijn', frequencyMhz: 315.0, bits: 12, encoding: 'debruijn', icon: Icons.bolt),
-  BruterProtocol(menuId: 37, name: 'DeBruijn Holtek', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.bolt),
-  BruterProtocol(menuId: 38, name: 'DeBruijn Linear', category: 'De Bruijn', frequencyMhz: 300.0, bits: 10, encoding: 'debruijn', icon: Icons.bolt),
-  BruterProtocol(menuId: 39, name: 'DeBruijn EV1527', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.bolt),
-  BruterProtocol(menuId: 40, name: 'Universal Sweep', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.radar),
+  BruterProtocol(menuId: 35, name: 'DeBruijn Generic 433', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.bolt, te: 300, ratio: 3),
+  BruterProtocol(menuId: 36, name: 'DeBruijn Generic 315', category: 'De Bruijn', frequencyMhz: 315.0, bits: 12, encoding: 'debruijn', icon: Icons.bolt, te: 300, ratio: 3),
+  BruterProtocol(menuId: 37, name: 'DeBruijn Holtek', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.bolt, te: 430, ratio: 2),
+  BruterProtocol(menuId: 38, name: 'DeBruijn Linear', category: 'De Bruijn', frequencyMhz: 300.0, bits: 10, encoding: 'debruijn', icon: Icons.bolt, te: 500, ratio: 3),
+  BruterProtocol(menuId: 39, name: 'DeBruijn EV1527', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.bolt, te: 320, ratio: 3),
+  BruterProtocol(menuId: 40, name: 'Universal Sweep', category: 'De Bruijn', frequencyMhz: 433.92, bits: 12, encoding: 'debruijn', icon: Icons.radar, te: 300, ratio: 3),
 ];
 
 /// Get unique category list preserving order
@@ -169,7 +175,11 @@ class BruteScreen extends StatefulWidget {
 }
 
 /// Map from standard protocol menuId to its De Bruijn equivalent menuId.
-/// Only protocols with binary encoding and ≤16 bits have De Bruijn support.
+/// NOTE: This map is kept for reference only. In De Bruijn mode, the app now
+/// sends a custom 0xFD command with the protocol's own Te, ratio, bits, and
+/// frequency — ensuring correct per-protocol timing and frequency.
+/// The hardcoded De Bruijn menus (35-39) remain available as standalone entries.
+// ignore: unused_element
 const Map<int, int> _standardToDeBruijnMap = {
   // CAME, NiceFlo, FAAC, BFT, Clemsa, GateTX, Phox, PhoenixV2, Prastel,
   // Doitrand, Nero, Magellen, Ansonic, EV1527 12b, Honeywell, StarLine,
@@ -731,23 +741,17 @@ class _BruteScreenState extends State<BruteScreen> {
     final settingsProvider = Provider.of<SettingsProvider>(context, listen: false);
     final delayMs = settingsProvider.bruterDelayMs;
 
-    // Determine actual menu ID: if DeBruijn mode is on and protocol is compatible,
-    // route to the corresponding DeBruijn menu instead.
+    // Determine if we should use custom De Bruijn (per-protocol timing/freq)
+    // instead of hardcoded De Bruijn menus which have fixed frequencies.
+    bool useCustomDeBruijn = false;
     int actualMenuId = protocol.menuId;
     String modeSuffix = '';
     if (_useDeBruijnMode && !protocol.isDeBruijn && protocol.deBruijnCompatible) {
-      final dbMenuId = _standardToDeBruijnMap[protocol.menuId];
-      if (dbMenuId != null) {
-        actualMenuId = dbMenuId;
-        modeSuffix = ' (DeBruijn)';
-      }
+      useCustomDeBruijn = true;
+      modeSuffix = ' (DeBruijn)';
     }
 
-    // Use the correct protocol for time estimation
-    final displayProto = actualMenuId != protocol.menuId
-        ? bruterProtocols.firstWhere((p) => p.menuId == actualMenuId, orElse: () => protocol)
-        : protocol;
-    final estTime = displayProto.estimatedTimeWithDelay(delayMs);
+    final estTime = protocol.estimatedTimeWithDelay(delayMs);
 
     // Show confirmation dialog with protocol details
     final confirmed = await showDialog<bool>(
@@ -811,7 +815,17 @@ class _BruteScreenState extends State<BruteScreen> {
     if (confirmed != true || !context.mounted) return;
 
     try {
-      await bleProvider.sendBruterCommand(actualMenuId);
+      if (useCustomDeBruijn) {
+        // Send custom De Bruijn command with per-protocol timing and frequency
+        await bleProvider.sendCustomDeBruijnCommand(
+          bits: protocol.bits,
+          te: protocol.te,
+          ratio: protocol.ratio,
+          frequencyMhz: protocol.frequencyMhz,
+        );
+      } else {
+        await bleProvider.sendBruterCommand(actualMenuId);
+      }
 
       if (context.mounted) {
         final notificationProvider = Provider.of<NotificationProvider>(context, listen: false);

mobile_app/lib/screens/file_viewer_screen.dart

@@ -82,36 +82,14 @@ class _FileViewerScreenState extends State<FileViewerScreen>
       
       // Log file path for debugging
       
-      // Determine basePath from pathType
-      String basePath;
-      switch (widget.pathType) {
-        case 1:
-          basePath = '/DATA/SIGNALS';
-          break;
-        case 2:
-          basePath = '/DATA/PRESETS';
-          break;
-        case 3:
-          basePath = '/DATA/TEMP';
-          break;
-        case 4:
-          basePath = '/';
-          break;
-        default:
-          basePath = '/DATA/RECORDS';
-      }
-      
-      // Use full path with directory (widget.filePath already contains the relative path)
-      // Remove leading slash if present to get relative path
+      // Use filePath as-is and let readFileContent handle path construction
+      // based on pathType (0-3=relative, 4-5=absolute)
       String filePath = widget.filePath;
-      if (filePath.startsWith('/')) {
-        filePath = filePath.substring(1);
-      }
       
       print('Loading file: path="$filePath", pathType=${widget.pathType}');
       
-      // Read file from ESP (isLoadingFileContent flag is set internally)
-      final content = await bleProvider.readFileContent(filePath, basePath: basePath);
+      // Read file from ESP (pathType determines how path is interpreted)
+      final content = await bleProvider.readFileContent(filePath, pathType: widget.pathType);
       
       if (mounted) {
         // Check if response is an error from ESP

mobile_app/lib/screens/record_screen.dart

@@ -48,7 +48,7 @@ class _RecordScreenState extends State<RecordScreen> with TickerProviderStateMix
   
   // Files from current recording session
   final List<String> _currentSessionFiles = [];
-  
+
   // Flags for tracking changes
   final List<bool> _configsChanged = [];
   
@@ -95,7 +95,7 @@ class _RecordScreenState extends State<RecordScreen> with TickerProviderStateMix
     print('_onRecordedFilesChanged called');
     final runtimeFiles = _bleProvider?.recordedRuntimeFiles ?? [];
     print('Runtime files: $runtimeFiles');
-    
+
     // Add new files to local recorded files list
     for (final file in runtimeFiles) {
       // Extract filename from object
@@ -931,7 +931,7 @@ class _RecordScreenState extends State<RecordScreen> with TickerProviderStateMix
               ),
               
               const SizedBox(height: 12),
-              
+
               // File list only for Recording
               if (selectedAction == ModuleAction.recording)
                 _buildModuleFilesList(moduleIndex),

mobile_app/lib/screens/settings_screen.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
@@ -28,6 +29,15 @@ class _SettingsScreenState extends State<SettingsScreen> {
   /// True after we sync HW button config from device once.
   bool _hwConfigSynced = false;
 
+  /// Debounce timer for nRF slider auto-send.
+  Timer? _nrfDebounceTimer;
+
+  @override
+  void dispose() {
+    _nrfDebounceTimer?.cancel();
+    super.dispose();
+  }
+
   /// Navigates to DebugScreen on single tap.
   void _onDebugTap(BuildContext context) {
     final settingsProvider =
@@ -615,11 +625,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
             ),
           ),
           subtitle: Text(
-            bleProvider.settingsSynced ? AppLocalizations.of(context)!.syncedWithDevice : AppLocalizations.of(context)!.localOnly,
-            style: TextStyle(
-              color: bleProvider.settingsSynced
-                  ? AppColors.success
-                  : AppColors.secondaryText,
+            AppLocalizations.of(context)!.rfSettingsSubtitle,
+            style: const TextStyle(
+              color: AppColors.secondaryText,
               fontSize: 12,
             ),
           ),
@@ -1027,73 +1035,79 @@ class _SettingsScreenState extends State<SettingsScreen> {
   }
 
   Widget _buildScannerSettings(BuildContext context, BleProvider bleProvider) {
-    return Padding(
-      padding: const EdgeInsets.symmetric(horizontal: 16.0),
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          Row(
+    return Consumer<SettingsProvider>(
+      builder: (context, settingsProvider, child) {
+        return Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16.0),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
             children: [
-              const Icon(Icons.signal_cellular_alt,
-                  size: 18, color: AppColors.secondaryText),
-              const SizedBox(width: 8),
-              Expanded(
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Text(
-                      AppLocalizations.of(context)!.rssiThreshold(bleProvider.scannerRssi),
-                      style: const TextStyle(
-                        color: AppColors.primaryText,
-                        fontSize: 13,
-                        fontWeight: FontWeight.w500,
-                      ),
+              // ── RSSI threshold ──
+              Row(
+                children: [
+                  const Icon(Icons.signal_cellular_alt,
+                      size: 18, color: AppColors.secondaryText),
+                  const SizedBox(width: 8),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          AppLocalizations.of(context)!.rssiThreshold(bleProvider.scannerRssi),
+                          style: const TextStyle(
+                            color: AppColors.primaryText,
+                            fontSize: 13,
+                            fontWeight: FontWeight.w500,
+                          ),
+                        ),
+                        Text(
+                          AppLocalizations.of(context)!.minSignalStrengthDesc,
+                          style: const TextStyle(
+                              color: AppColors.secondaryText, fontSize: 11),
+                        ),
+                      ],
                     ),
-                    Text(
-                      AppLocalizations.of(context)!.minSignalStrengthDesc,
-                      style: const TextStyle(
-                          color: AppColors.secondaryText, fontSize: 11),
-                    ),
-                  ],
-                ),
+                  ),
+                ],
               ),
+              Slider(
+                value: bleProvider.scannerRssi.toDouble(),
+                min: -120,
+                max: -20,
+                divisions: 100,
+                label: '${bleProvider.scannerRssi} dBm',
+                activeColor: AppColors.searching,
+                onChanged: (value) {
+                  bleProvider.sendSettingsToDevice(scannerRssi: value.round());
+                },
+              ),
+              Wrap(
+                spacing: 8,
+                children: [-90, -80, -70, -60, -50].map((rssi) {
+                  final isSelected = bleProvider.scannerRssi == rssi;
+                  return ChoiceChip(
+                    label: Text('$rssi'),
+                    selected: isSelected,
+                    onSelected: (_) {
+                      bleProvider.sendSettingsToDevice(scannerRssi: rssi);
+                    },
+                    selectedColor:
+                        AppColors.searching.withValues(alpha: 0.2),
+                    labelStyle: TextStyle(
+                      color: isSelected
+                          ? AppColors.searching
+                          : AppColors.secondaryText,
+                      fontSize: 11,
+                    ),
+                    visualDensity: VisualDensity.compact,
+                  );
+                }).toList(),
+              ),
+
             ],
           ),
-          Slider(
-            value: bleProvider.scannerRssi.toDouble(),
-            min: -120,
-            max: -20,
-            divisions: 100,
-            label: '${bleProvider.scannerRssi} dBm',
-            activeColor: AppColors.searching,
-            onChanged: (value) {
-              bleProvider.sendSettingsToDevice(scannerRssi: value.round());
-            },
-          ),
-          Wrap(
-            spacing: 8,
-            children: [-90, -80, -70, -60, -50].map((rssi) {
-              final isSelected = bleProvider.scannerRssi == rssi;
-              return ChoiceChip(
-                label: Text('$rssi'),
-                selected: isSelected,
-                onSelected: (_) {
-                  bleProvider.sendSettingsToDevice(scannerRssi: rssi);
-                },
-                selectedColor:
-                    AppColors.searching.withValues(alpha: 0.2),
-                labelStyle: TextStyle(
-                  color: isSelected
-                      ? AppColors.searching
-                      : AppColors.secondaryText,
-                  fontSize: 11,
-                ),
-                visualDensity: VisualDensity.compact,
-              );
-            }).toList(),
-          ),
-        ],
-      ),
+        );
+      },
     );
   }
 
@@ -1178,7 +1192,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
                           return ChoiceChip(
                             label: Text(_nrfPaLabel(lvl)),
                             selected: isSelected,
-                            onSelected: (_) => settingsProvider.setNrfPaLevel(lvl),
+                            onSelected: (_) {
+                              settingsProvider.setNrfPaLevel(lvl);
+                              _sendNrfSettings(context, bleProvider, settingsProvider);
+                            },
                             selectedColor: const Color(0xFF00BCD4).withValues(alpha: 0.2),
                             labelStyle: TextStyle(
                               color: isSelected ? const Color(0xFF00BCD4) : AppColors.secondaryText,
@@ -1220,7 +1237,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
                           return ChoiceChip(
                             label: Text(_nrfDataRateLabel(dr)),
                             selected: isSelected,
-                            onSelected: (_) => settingsProvider.setNrfDataRate(dr),
+                            onSelected: (_) {
+                              settingsProvider.setNrfDataRate(dr);
+                              _sendNrfSettings(context, bleProvider, settingsProvider);
+                            },
                             selectedColor: const Color(0xFF00BCD4).withValues(alpha: 0.2),
                             labelStyle: TextStyle(
                               color: isSelected ? const Color(0xFF00BCD4) : AppColors.secondaryText,
@@ -1271,6 +1291,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                         activeColor: const Color(0xFF00BCD4),
                         onChanged: (value) {
                           settingsProvider.setNrfChannel(value.round());
+                          _debouncedSendNrfSettings(context, bleProvider, settingsProvider);
                         },
                       ),
 
@@ -1313,38 +1334,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
                         activeColor: const Color(0xFF00BCD4),
                         onChanged: (value) {
                           settingsProvider.setNrfAutoRetransmit(value.round());
+                          _debouncedSendNrfSettings(context, bleProvider, settingsProvider);
                         },
                       ),
-
-                      const SizedBox(height: 12),
-
-                      // Send to device button
-                      SizedBox(
-                        width: double.infinity,
-                        child: ElevatedButton.icon(
-                          onPressed: bleProvider.isConnected
-                              ? () => _sendNrfSettings(context, bleProvider, settingsProvider)
-                              : null,
-                          icon: const Icon(Icons.send),
-                          label: Text(AppLocalizations.of(context)!.sendToDevice),
-                          style: ElevatedButton.styleFrom(
-                            backgroundColor: const Color(0xFF00BCD4),
-                            foregroundColor: AppColors.primaryBackground,
-                            disabledBackgroundColor:
-                                const Color(0xFF00BCD4).withValues(alpha: 0.3),
-                            disabledForegroundColor: AppColors.disabledText,
-                          ),
-                        ),
-                      ),
-                      if (!bleProvider.isConnected)
-                        Padding(
-                          padding: const EdgeInsets.only(top: 4),
-                          child: Text(
-                            AppLocalizations.of(context)!.connectToDeviceToApply,
-                            style: const TextStyle(
-                                color: AppColors.secondaryText, fontSize: 11),
-                          ),
-                        ),
                     ],
                   ),
                 );
@@ -1375,8 +1367,18 @@ class _SettingsScreenState extends State<SettingsScreen> {
     }
   }
 
+  /// Debounced auto-send for nRF slider changes (500ms).
+  void _debouncedSendNrfSettings(BuildContext context, BleProvider bleProvider,
+      SettingsProvider settingsProvider) {
+    _nrfDebounceTimer?.cancel();
+    _nrfDebounceTimer = Timer(const Duration(milliseconds: 500), () {
+      _sendNrfSettings(context, bleProvider, settingsProvider);
+    });
+  }
+
   void _sendNrfSettings(BuildContext context, BleProvider bleProvider,
       SettingsProvider settingsProvider) async {
+    if (!bleProvider.isConnected) return;
     try {
       // Send NRF settings as a settings sync command
       // Using MSG_SETTINGS_UPDATE (0xC1) with extended NRF payload
@@ -1862,6 +1864,59 @@ class _SettingsScreenState extends State<SettingsScreen> {
 
                   const SizedBox(height: 24),
 
+                  // ── Format SD Card ──
+                  Container(
+                    width: double.infinity,
+                    padding: const EdgeInsets.all(12),
+                    decoration: BoxDecoration(
+                      color: AppColors.warning.withValues(alpha: 0.06),
+                      borderRadius: BorderRadius.circular(8),
+                      border: Border.all(color: AppColors.warning.withValues(alpha: 0.3)),
+                    ),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        const Row(
+                          children: [
+                            Icon(Icons.sd_card_alert, size: 18, color: AppColors.warning),
+                            SizedBox(width: 8),
+                            Text(
+                              'Format SD Card',
+                              style: TextStyle(
+                                color: AppColors.warning,
+                                fontWeight: FontWeight.bold,
+                                fontSize: 14,
+                              ),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 8),
+                        const Text(
+                          'Delete all files and folders from the SD card and re-create the default directory structure. This cannot be undone.',
+                          style: TextStyle(color: AppColors.secondaryText, fontSize: 12),
+                        ),
+                        const SizedBox(height: 12),
+                        SizedBox(
+                          width: double.infinity,
+                          child: ElevatedButton.icon(
+                            onPressed: bleProvider.isConnected
+                                ? () => _showFormatSDDialog(context, bleProvider)
+                                : null,
+                            icon: const Icon(Icons.sd_card),
+                            label: const Text('Format SD Card'),
+                            style: ElevatedButton.styleFrom(
+                              backgroundColor: AppColors.warning,
+                              foregroundColor: Colors.white,
+                              disabledBackgroundColor: AppColors.warning.withValues(alpha: 0.3),
+                            ),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  const SizedBox(height: 24),
+
                   // ── Factory Reset ──
                   Container(
                     width: double.infinity,
@@ -2049,6 +2104,158 @@ class _SettingsScreenState extends State<SettingsScreen> {
     );
   }
 
+  /// Show Format SD Card confirmation dialog, then a non-dismissible
+  /// progress dialog that auto-closes when the firmware sends the result.
+  void _showFormatSDDialog(BuildContext context, BleProvider bleProvider) {
+    showDialog(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        backgroundColor: AppColors.secondaryBackground,
+        title: const Row(
+          children: [
+            Icon(Icons.sd_card_alert, color: AppColors.warning, size: 24),
+            SizedBox(width: 10),
+            Text('Format SD Card', style: TextStyle(color: AppColors.warning)),
+          ],
+        ),
+        content: const Text(
+          'Are you sure you want to delete ALL files from the SD card?\n\n'
+          'This will:\n'
+          '  - Delete all recordings, signals, and presets\n'
+          '  - Delete all uploaded .sub files\n'
+          '  - Re-create the default directory structure\n\n'
+          'This action cannot be undone.',
+          style: TextStyle(color: AppColors.primaryText, fontSize: 14),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(ctx).pop(),
+            child: const Text('No', style: TextStyle(color: AppColors.secondaryText, fontSize: 16)),
+          ),
+          ElevatedButton(
+            onPressed: () async {
+              Navigator.of(ctx).pop();
+              final sent = await bleProvider.formatSDCard();
+              if (!context.mounted) return;
+              if (!sent) {
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(
+                    content: Text('Failed to send format SD command.'),
+                    backgroundColor: AppColors.error,
+                  ),
+                );
+                return;
+              }
+              // Show non-dismissible progress dialog; auto-closes on result
+              _showSDFormatProgressDialog(context);
+            },
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.warning,
+              foregroundColor: Colors.white,
+            ),
+            child: const Text('Yes, Format', style: TextStyle(fontSize: 16)),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// Non-dismissible progress dialog that listens to BleProvider.isFormattingSD
+  /// and closes automatically when the firmware result arrives.
+  void _showSDFormatProgressDialog(BuildContext context) {
+    bool closed = false;
+    bool hasReceivedResponse = false;
+    
+    showDialog(
+      context: context,
+      barrierDismissible: false,
+      builder: (ctx) => PopScope(
+        canPop: false,
+        child: Consumer<BleProvider>(
+          builder: (context, ble, _) {
+            // Mark that we've started receiving progress updates
+            if (ble.isFormattingSD && ble.sdFormatProgress.isNotEmpty) {
+              hasReceivedResponse = true;
+            }
+            
+            // Only close if we've received at least one progress update and formatting is done
+            // This prevents premature closure if firmware responds instantly with error
+            if (!ble.isFormattingSD && !closed && hasReceivedResponse) {
+              closed = true;
+              WidgetsBinding.instance.addPostFrameCallback((_) {
+                if (ctx.mounted) Navigator.of(ctx).pop();
+                if (context.mounted) {
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    SnackBar(
+                      content: Text(ble.sdFormatSuccess
+                          ? 'SD card formatted successfully.'
+                          : 'SD card format failed.'),
+                      backgroundColor: ble.sdFormatSuccess
+                          ? AppColors.success
+                          : AppColors.error,
+                      duration: const Duration(seconds: 3),
+                    ),
+                  );
+                }
+              });
+            }
+            
+            // Show warning if formatting takes too long without progress
+            if (ble.isFormattingSD && !hasReceivedResponse) {
+              // Start a timeout to close dialog if no response after 10 seconds
+              Future.delayed(const Duration(seconds: 10), () {
+                if (ctx.mounted && !closed && !hasReceivedResponse) {
+                  closed = true;
+                  Navigator.of(ctx).pop();
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    const SnackBar(
+                      content: Text('Format timeout: No response from device.'),
+                      backgroundColor: AppColors.error,
+                      duration: Duration(seconds: 4),
+                    ),
+                  );
+                }
+              });
+            }
+            
+            return AlertDialog(
+              backgroundColor: AppColors.secondaryBackground,
+              title: const Row(
+                children: [
+                  Icon(Icons.sd_card, color: AppColors.warning, size: 24),
+                  SizedBox(width: 10),
+                  Text('Formatting...', style: TextStyle(color: AppColors.warning)),
+                ],
+              ),
+              content: Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  const CircularProgressIndicator(),
+                  const SizedBox(height: 16),
+                  Text(
+                    ble.sdFormatProgress.isNotEmpty
+                        ? ble.sdFormatProgress
+                        : 'Formatting SD card, please wait.',
+                    style: const TextStyle(color: AppColors.primaryText),
+                    textAlign: TextAlign.center,
+                    maxLines: 3,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                  const SizedBox(height: 8),
+                  const Text(
+                    'Do not disconnect the device.',
+                    style: TextStyle(color: AppColors.secondaryText, fontSize: 12),
+                    textAlign: TextAlign.center,
+                  ),
+                ],
+              ),
+            );
+          },
+        ),
+      ),
+    );
+  }
+
   /// Build HW Buttons configuration section.
   Widget _buildHwButtonsSection(BuildContext context, BleProvider bleProvider) {
     return Card(
@@ -2124,9 +2331,13 @@ class _SettingsScreenState extends State<SettingsScreen> {
                         action: settingsProvider.button1Action,
                         color: AppColors.primaryAccent,
                         replayPath: settingsProvider.button1ReplayPath,
-                        onPickReplayFile: () => _pickReplaySubFile(context, settingsProvider, 1),
+                        onPickReplayFile: () async {
+                          await _pickReplaySubFile(context, settingsProvider, 1);
+                          _sendButtonConfig(context, bleProvider, settingsProvider);
+                        },
                         onChanged: (action) {
                           settingsProvider.setButton1Action(action);
+                          _sendButtonConfig(context, bleProvider, settingsProvider);
                         },
                       ),
 
@@ -2138,42 +2349,15 @@ class _SettingsScreenState extends State<SettingsScreen> {
                         action: settingsProvider.button2Action,
                         color: AppColors.warning,
                         replayPath: settingsProvider.button2ReplayPath,
-                        onPickReplayFile: () => _pickReplaySubFile(context, settingsProvider, 2),
+                        onPickReplayFile: () async {
+                          await _pickReplaySubFile(context, settingsProvider, 2);
+                          _sendButtonConfig(context, bleProvider, settingsProvider);
+                        },
                         onChanged: (action) {
                           settingsProvider.setButton2Action(action);
+                          _sendButtonConfig(context, bleProvider, settingsProvider);
                         },
                       ),
-
-                      const SizedBox(height: 16),
-
-                      // Send to device button
-                      SizedBox(
-                        width: double.infinity,
-                        child: ElevatedButton.icon(
-                          onPressed: bleProvider.isConnected
-                              ? () => _sendButtonConfig(
-                                  context, bleProvider, settingsProvider)
-                              : null,
-                          icon: const Icon(Icons.send),
-                          label: Text(AppLocalizations.of(context)!.sendToDevice),
-                          style: ElevatedButton.styleFrom(
-                            backgroundColor: AppColors.info,
-                            foregroundColor: AppColors.primaryBackground,
-                            disabledBackgroundColor:
-                                AppColors.info.withValues(alpha: 0.3),
-                            disabledForegroundColor: AppColors.disabledText,
-                          ),
-                        ),
-                      ),
-                      if (!bleProvider.isConnected)
-                        Padding(
-                          padding: const EdgeInsets.only(top: 4),
-                          child: Text(
-                            AppLocalizations.of(context)!.connectToDeviceToApply,
-                            style: const TextStyle(
-                                color: AppColors.secondaryText, fontSize: 11),
-                          ),
-                        ),
                     ],
                   ),
                 );
@@ -2261,7 +2445,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 child: Text(
                   replayPath == null || replayPath.isEmpty
                       ? 'No .sub file selected'
-                      : replayPath,
+                      : replayPath.split('/').last,
                   maxLines: 1,
                   overflow: TextOverflow.ellipsis,
                   style: const TextStyle(color: AppColors.secondaryText, fontSize: 11),
@@ -3150,34 +3334,126 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
   bool _hasError = false;
   String _errorMessage = '';
 
+  // Pause / Resume state
+  bool _isPaused = false;
+  bool _pauseRequested = false;
+  bool _checkingResume = true;
+  bool _hasResumableSession = false;
+  Set<String> _completedPaths = {};
+
   @override
   void initState() {
     super.initState();
-    _startCloning();
+    _checkForResumableSession();
   }
 
-  Future<void> _startCloning() async {
+  /// On open, check if a previous session can be resumed.
+  Future<void> _checkForResumableSession() async {
+    final hasResume = await FlipperSubDbService.hasResumableSession();
+    if (!mounted) return;
+    if (hasResume) {
+      final completed = await FlipperSubDbService.loadCompletedFiles();
+      setState(() {
+        _checkingResume = false;
+        _hasResumableSession = true;
+        _completedPaths = completed;
+        _statusText =
+            'Previous session found (${completed.length} files already uploaded). Resume or start fresh?';
+      });
+    } else {
+      setState(() {
+        _checkingResume = false;
+        _hasResumableSession = false;
+      });
+      _startCloning(resume: false);
+    }
+  }
+
+  /// Pause the current upload. Finishes the file in progress, then stops.
+  void _pauseCloning() {
+    setState(() {
+      _pauseRequested = true;
+      _statusText = 'Pausing after current file...';
+    });
+  }
+
+  /// Resume a paused or previously-saved session.
+  void _resumeCloning() {
+    setState(() {
+      _isPaused = false;
+      _pauseRequested = false;
+      _hasResumableSession = false;
+    });
+    _startCloning(resume: true);
+  }
+
+  Future<void> _startCloning({required bool resume}) async {
     // Keep screen awake during the entire cloning process
     WakelockPlus.enable();
     try {
-      // Phase 1 & 2: Download and extract
-      setState(() {
-        _phase = 'download';
-        _statusText = 'Downloading SubGHz database from GitHub...';
-        _progress = 0.0;
-      });
+      List<SubFileEntry> subFiles;
 
-      final subFiles = await FlipperSubDbService.downloadAndExtract(
-        onProgress: (phase, detail, fraction) {
-          if (mounted) {
-            setState(() {
-              _phase = phase;
-              _statusText = detail;
-              _progress = fraction;
-            });
-          }
-        },
-      );
+      if (resume) {
+        // ── Resume path: re-extract from cached ZIP ──
+        setState(() {
+          _phase = 'extract';
+          _statusText = 'Loading cached database...';
+          _progress = 0.0;
+        });
+
+        final cachedZip = await FlipperSubDbService.loadCachedZip();
+        if (cachedZip == null) {
+          setState(() {
+            _isDone = true;
+            _hasError = true;
+            _errorMessage = 'Cached ZIP not found. Please start a fresh clone.';
+          });
+          WakelockPlus.disable();
+          return;
+        }
+
+        // Load previously completed files
+        _completedPaths = await FlipperSubDbService.loadCompletedFiles();
+
+        subFiles = FlipperSubDbService.extractFromBytes(
+          cachedZip,
+          onProgress: (phase, detail, fraction) {
+            if (mounted) {
+              setState(() {
+                _phase = phase;
+                _statusText = detail;
+                _progress = fraction;
+              });
+            }
+          },
+        );
+      } else {
+        // ── Fresh start: download and extract ──
+        _completedPaths = {};
+        await FlipperSubDbService.clearCache();
+
+        setState(() {
+          _phase = 'download';
+          _statusText = 'Downloading SubGHz database from GitHub...';
+          _progress = 0.0;
+        });
+
+        subFiles = await FlipperSubDbService.downloadAndExtract(
+          onProgress: (phase, detail, fraction) {
+            if (mounted) {
+              setState(() {
+                _phase = phase;
+                _statusText = detail;
+                _progress = fraction;
+              });
+            }
+          },
+          onZipDownloaded: (zipBytes) async {
+            // Cache the raw ZIP for potential resume
+            await FlipperSubDbService.cacheZipBytes(zipBytes);
+          },
+        );
+      }
 
       if (subFiles.isEmpty) {
         setState(() {
@@ -3185,16 +3461,18 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
           _hasError = true;
           _errorMessage = 'No .sub files found in the repository';
         });
+        WakelockPlus.disable();
         return;
       }
 
       _totalFiles = subFiles.length;
+      _uploadedFiles = _completedPaths.length;
 
       // Phase 3: Create base directory on SDCard
       setState(() {
         _phase = 'upload';
         _statusText = 'Creating "SUB Files" folder on SDCard...';
-        _progress = 0.0;
+        _progress = _completedPaths.length / _totalFiles;
       });
 
       await widget.bleProvider.createDirectory(
@@ -3208,7 +3486,8 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
         if (parts.length > 1) {
           // Build cumulative subdir paths
           for (int i = 1; i < parts.length; i++) {
-            final subdir = '${FlipperSubDbService.sdTargetFolder}/${parts.sublist(0, i).join('/')}';
+            final subdir =
+                '${FlipperSubDbService.sdTargetFolder}/${parts.sublist(0, i).join('/')}';
             subdirs.add(subdir);
           }
         }
@@ -3217,6 +3496,7 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
       // Create subdirectories (sorted so parents come first)
       final sortedDirs = subdirs.toList()..sort();
       for (final dir in sortedDirs) {
+        if (_pauseRequested) break;
         setState(() {
           _statusText = 'Creating folder: $dir';
         });
@@ -3230,15 +3510,36 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
 
       // Phase 4: Upload files one at a time
       for (int i = 0; i < subFiles.length; i++) {
+        // ── Check for pause after each file ──
+        if (_pauseRequested) {
+          await FlipperSubDbService.saveProgress(_completedPaths);
+          if (mounted) {
+            setState(() {
+              _isPaused = true;
+              _pauseRequested = false;
+              _statusText =
+                  'Paused – $_uploadedFiles / $_totalFiles files uploaded. You can close and resume later.';
+            });
+          }
+          WakelockPlus.disable();
+          return;
+        }
+
         final file = subFiles[i];
+
+        // Skip already-uploaded files (from a previous session)
+        if (_completedPaths.contains(file.relativePath)) {
+          continue;
+        }
+
         final targetPath =
             '${FlipperSubDbService.sdTargetFolder}/${file.relativePath}';
 
         if (mounted) {
           setState(() {
-            _uploadedFiles = i;
-            _statusText = 'Uploading (${i + 1}/$_totalFiles): ${file.relativePath}';
-            _progress = i / _totalFiles;
+            _statusText =
+                'Uploading (${_uploadedFiles + 1}/$_totalFiles): ${file.relativePath}';
+            _progress = _uploadedFiles / _totalFiles;
           });
         }
 
@@ -3248,6 +3549,14 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
             targetPath,
             pathType: 5,
           );
+          _completedPaths.add(file.relativePath);
+          _uploadedFiles = _completedPaths.length;
+
+          // Persist progress every 10 files for safety
+          if (_uploadedFiles % 10 == 0) {
+            await FlipperSubDbService.saveProgress(_completedPaths);
+          }
+
           // Pace uploads to avoid BLE congestion
           await Future.delayed(const Duration(milliseconds: 150));
         } catch (e) {
@@ -3257,6 +3566,9 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
         }
       }
 
+      // All files processed – clean up cache
+      await FlipperSubDbService.clearCache();
+
       if (mounted) {
         setState(() {
           _isDone = true;
@@ -3270,6 +3582,10 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
       // Release wakelock after successful completion
       WakelockPlus.disable();
     } catch (e) {
+      // On error, save progress so user can resume later
+      if (_completedPaths.isNotEmpty) {
+        await FlipperSubDbService.saveProgress(_completedPaths);
+      }
       // Release wakelock on error
       WakelockPlus.disable();
       if (mounted) {
@@ -3285,23 +3601,87 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
 
   @override
   Widget build(BuildContext context) {
+    // While checking for resumable session, show a spinner
+    if (_checkingResume) {
+      return AlertDialog(
+        title: Row(
+          children: [
+            const SizedBox(
+              width: 20,
+              height: 20,
+              child: CircularProgressIndicator(strokeWidth: 2),
+            ),
+            const SizedBox(width: 8),
+            const Text('Clone SubGHz DB', style: TextStyle(fontSize: 16)),
+          ],
+        ),
+        content: const Text('Checking for previous session...'),
+      );
+    }
+
+    // If a resumable session was found, show Resume / Start Fresh options
+    if (_hasResumableSession && !_isPaused && _phase == 'init') {
+      return AlertDialog(
+        title: Row(
+          children: [
+            Icon(Icons.replay, color: Colors.orange),
+            const SizedBox(width: 8),
+            const Expanded(
+              child: Text('Resume Clone?', style: TextStyle(fontSize: 16)),
+            ),
+          ],
+        ),
+        content: Text(
+          '${_completedPaths.length} files were uploaded in a previous session.\n'
+          'Resume where you left off, or start fresh?',
+          style: TextStyle(color: AppColors.primaryText, fontSize: 13),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: const Text('Cancel'),
+          ),
+          OutlinedButton(
+            onPressed: () {
+              setState(() {
+                _hasResumableSession = false;
+                _completedPaths = {};
+              });
+              _startCloning(resume: false);
+            },
+            child: const Text('Start Fresh'),
+          ),
+          ElevatedButton(
+            onPressed: _resumeCloning,
+            child: const Text('Resume'),
+          ),
+        ],
+      );
+    }
+
     return AlertDialog(
       title: Row(
         children: [
           Icon(
             _isDone
                 ? (_hasError ? Icons.error_outline : Icons.check_circle)
-                : Icons.cloud_download,
+                : _isPaused
+                    ? Icons.pause_circle
+                    : Icons.cloud_download,
             color: _isDone
                 ? (_hasError ? AppColors.error : AppColors.success)
-                : Colors.orange,
+                : _isPaused
+                    ? Colors.orange
+                    : Colors.orange,
           ),
           const SizedBox(width: 8),
           Expanded(
             child: Text(
               _isDone
                   ? (_hasError ? 'Clone Failed' : 'Clone Complete')
-                  : 'Cloning SubGHz Database',
+                  : _isPaused
+                      ? 'Clone Paused'
+                      : 'Cloning SubGHz Database',
               style: const TextStyle(fontSize: 16),
             ),
           ),
@@ -3312,7 +3692,7 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           // Phase indicator
-          if (!_isDone) ...[
+          if (!_isDone && !_isPaused) ...[
             Row(
               children: [
                 SizedBox(
@@ -3364,7 +3744,9 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
                     ? AppColors.error
                     : _isDone
                         ? AppColors.success
-                        : Colors.orange,
+                        : _isPaused
+                            ? Colors.orange.shade300
+                            : Colors.orange,
               ),
               minHeight: 8,
             ),
@@ -3372,7 +3754,7 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
           const SizedBox(height: 8),
 
           // File counter (during upload phase)
-          if (_phase == 'upload' || _isDone)
+          if (_phase == 'upload' || _isDone || _isPaused)
             Text(
               '$_uploadedFiles / $_totalFiles files'
               '${_failedFiles > 0 ? ' ($_failedFiles failed)' : ''}',
@@ -3402,10 +3784,41 @@ class _SubGhzCloneDialogState extends State<_SubGhzCloneDialog> {
         ],
       ),
       actions: [
-        if (_isDone)
-          ElevatedButton(
+        // Close button when done, paused, or errored
+        if (_isDone || _isPaused)
+          TextButton(
             onPressed: () => Navigator.of(context).pop(),
-            child: Text('Close'),
+            child: const Text('Close'),
+          ),
+
+        // Resume button when paused
+        if (_isPaused)
+          ElevatedButton.icon(
+            onPressed: _resumeCloning,
+            icon: const Icon(Icons.play_arrow, size: 18),
+            label: const Text('Resume'),
+          ),
+
+        // Pause button during upload (only while actively uploading)
+        if (!_isDone && !_isPaused && _phase == 'upload' && !_pauseRequested)
+          ElevatedButton.icon(
+            onPressed: _pauseCloning,
+            icon: const Icon(Icons.pause, size: 18),
+            label: const Text('Pause'),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: Colors.orange,
+            ),
+          ),
+
+        // Show "Pausing..." indicator when pause is requested
+        if (_pauseRequested && !_isPaused)
+          const Padding(
+            padding: EdgeInsets.symmetric(horizontal: 8),
+            child: SizedBox(
+              width: 20,
+              height: 20,
+              child: CircularProgressIndicator(strokeWidth: 2),
+            ),
           ),
       ],
     );

mobile_app/lib/screens/signal_scanner_screen.dart

@@ -8,7 +8,6 @@ import '../providers/notification_provider.dart';
 import '../providers/firmware_protocol.dart';
 import '../models/detected_signal.dart';
 import '../theme/app_colors.dart';
-
 class SignalScannerScreen extends StatefulWidget {
   const SignalScannerScreen({super.key});
 
@@ -19,8 +18,8 @@ class SignalScannerScreen extends StatefulWidget {
 class _SignalScannerScreenState extends State<SignalScannerScreen>
     with TickerProviderStateMixin {
 
-  // Scanning modes
-  bool _isListMode = true;
+  // View modes: 0 = Signal List, 1 = Spectrogram (default)
+  int _viewMode = 1;
   bool _isScanning = false;
   int _selectedModule = 0; // 0 or 1 (displayed as 1 or 2)
 
@@ -53,7 +52,7 @@ class _SignalScannerScreenState extends State<SignalScannerScreen>
       duration: const Duration(milliseconds: 800),
       vsync: this,
     )..addListener(() {
-        if (!_isListMode) setState(() {}); // Rebuild spectrogram on tick
+        if (_viewMode != 0) setState(() {}); // Rebuild spectrogram on tick
       });
   }
 
@@ -75,7 +74,7 @@ class _SignalScannerScreenState extends State<SignalScannerScreen>
     final bleProvider = Provider.of<BleProvider>(context, listen: false);
 
     setState(() => _isScanning = true);
-    if (!_isListMode) _spectrumAnimationController.repeat();
+    if (_viewMode != 0) _spectrumAnimationController.repeat();
 
     // Start decay timer for dynamic spectrogram
     _startDecayTimer();
@@ -261,7 +260,7 @@ class _SignalScannerScreenState extends State<SignalScannerScreen>
                     _buildControlPanel(),
                     _buildModeSwitch(),
                     Expanded(
-                      child: _isListMode
+                      child: _viewMode == 0
                           ? _buildListView(bleProvider)
                           : _buildSpectrumView(bleProvider),
                     ),
@@ -313,7 +312,7 @@ class _SignalScannerScreenState extends State<SignalScannerScreen>
           ),
           const SizedBox(height: 8),
           // RSSI threshold
-          if (_isListMode)
+          if (_viewMode == 0)
             Row(
               children: [
                 const Text('RSSI:', style: TextStyle(
@@ -374,29 +373,28 @@ class _SignalScannerScreenState extends State<SignalScannerScreen>
       ),
       child: Row(
         children: [
-          _modeSwitchTab(AppLocalizations.of(context)!.signalList, isSelected: _isListMode, onTap: () {
-            setState(() => _isListMode = true);
-          }),
-          _modeSwitchTab(AppLocalizations.of(context)!.spectrogramView, isSelected: !_isListMode, onTap: () {
-            setState(() => _isListMode = false);
-          }),
+          _modeSwitchTab(AppLocalizations.of(context)!.signalList,
+              isSelected: _viewMode == 0, onTap: () => _setViewMode(0)),
+          _modeSwitchTab(AppLocalizations.of(context)!.spectrogramView,
+              isSelected: _viewMode == 1, onTap: () => _setViewMode(1)),
         ],
       ),
     );
   }
 
+  void _setViewMode(int mode) {
+    setState(() => _viewMode = mode);
+    if (_viewMode != 0 && _isScanning) {
+      _spectrumAnimationController.repeat();
+    } else {
+      _spectrumAnimationController.stop();
+    }
+  }
+
   Widget _modeSwitchTab(String label, {required bool isSelected, required VoidCallback onTap}) {
     return Expanded(
       child: GestureDetector(
-        onTap: () {
-          onTap();
-          // Start/stop animation controller when switching to/from spectrogram
-          if (!_isListMode && _isScanning) {
-            _spectrumAnimationController.repeat();
-          } else {
-            _spectrumAnimationController.stop();
-          }
-        },
+        onTap: onTap,
         child: Container(
           padding: const EdgeInsets.symmetric(vertical: 10),
           decoration: BoxDecoration(
@@ -409,7 +407,7 @@ class _SignalScannerScreenState extends State<SignalScannerScreen>
             style: TextStyle(
               color: isSelected ? Colors.black : AppColors.secondaryText,
               fontWeight: FontWeight.bold,
-              fontSize: 13,
+              fontSize: 12,
             ),
           ),
         ),

mobile_app/lib/services/binary_message_parser.dart

@@ -430,16 +430,21 @@ class BinaryFileActionResult {
       case 5: return 'move';
       case 6: return 'tree';
       case 7: return 'load';
+      case 8: return 'format-sd';
       default: return 'unknown';
     }
   }
 
   Map<String, dynamic> toJson() {
+    // errorCode 0xFF with success=true means "in progress" (format SD step)
+    bool isProgress = (success && errorCode == 0xFF);
     return {
       'action': getActionString(),
       'success': success,
       'path': path,
       'error': success ? null : _getErrorMessage(errorCode),
+      'isProgress': isProgress,
+      'progressMessage': isProgress ? path : null,
     };
   }
 

mobile_app/lib/services/flipper_subdb_service.dart

@@ -33,6 +33,7 @@ class FlipperSubDbService {
   ///   - phase "extract": extracting .sub files from ZIP
   static Future<List<SubFileEntry>> downloadAndExtract({
     void Function(String phase, String detail, double fraction)? onProgress,
+    Future<void> Function(List<int> zipBytes)? onZipDownloaded,
   }) async {
     // --- Phase 1: Download ZIP ---
     onProgress?.call('download', 'Connecting to GitHub...', 0.0);
@@ -65,6 +66,9 @@ class FlipperSubDbService {
 
     onProgress?.call('download', 'Download complete', 1.0);
 
+    // Allow caller to cache the raw ZIP for later resume
+    await onZipDownloaded?.call(zipBytes);
+
     // --- Phase 2: Extract .sub files ---
     onProgress?.call('extract', 'Decompressing ZIP...', 0.0);
 
@@ -72,8 +76,12 @@ class FlipperSubDbService {
     final subFiles = <SubFileEntry>[];
 
     // The ZIP contains a root folder like "FlipperZero-Subghz-DB-main/"
-    // We strip that prefix to get clean relative paths.
+    // followed by a "subghz/" subfolder. We strip both prefixes so that
+    // relative paths start directly at the category level (e.g.,
+    // "Adjustable_Beds/RIZE .../file.sub") and map onto "SUB Files/..." on SD.
     String? rootPrefix;
+    // Second-level prefix to strip (e.g. "subghz/")
+    const String subghzFolder = 'subghz/';
 
     int processed = 0;
     final total = archive.files.length;
@@ -92,6 +100,11 @@ class FlipperSubDbService {
           if (rootPrefix != null && relativePath.startsWith(rootPrefix)) {
             relativePath = relativePath.substring(rootPrefix.length);
           }
+          // Strip the "subghz/" second-level folder so paths go directly
+          // inside "SUB Files/" on the SD card.
+          if (relativePath.startsWith(subghzFolder)) {
+            relativePath = relativePath.substring(subghzFolder.length);
+          }
           // Skip empty paths
           if (relativePath.isNotEmpty) {
             subFiles.add(SubFileEntry(
@@ -129,4 +142,119 @@ class FlipperSubDbService {
     }
     return null;
   }
+
+  // ---------------------------------------------------------------------------
+  // Progress persistence for Pause / Resume
+  // ---------------------------------------------------------------------------
+
+  static const String _progressFileName = 'clone_progress.json';
+  static const String _cachedZipFileName = 'clone_cached.zip';
+
+  /// Return the app-data directory used for clone cache files.
+  static Future<Directory> _cacheDir() async {
+    final appDir = await getApplicationDocumentsDirectory();
+    final dir = Directory('${appDir.path}/clone_cache');
+    if (!await dir.exists()) await dir.create(recursive: true);
+    return dir;
+  }
+
+  /// Check whether a resumable clone session exists.
+  static Future<bool> hasResumableSession() async {
+    final dir = await _cacheDir();
+    final progressFile = File('${dir.path}/$_progressFileName');
+    final zipFile = File('${dir.path}/$_cachedZipFileName');
+    return await progressFile.exists() && await zipFile.exists();
+  }
+
+  /// Load the set of already-uploaded relative paths from the progress file.
+  static Future<Set<String>> loadCompletedFiles() async {
+    final dir = await _cacheDir();
+    final file = File('${dir.path}/$_progressFileName');
+    if (!await file.exists()) return {};
+    try {
+      final json = jsonDecode(await file.readAsString());
+      return Set<String>.from(json['completed'] as List);
+    } catch (_) {
+      return {};
+    }
+  }
+
+  /// Save the set of completed file paths (call after each successful upload).
+  static Future<void> saveProgress(Set<String> completedPaths) async {
+    final dir = await _cacheDir();
+    final file = File('${dir.path}/$_progressFileName');
+    await file.writeAsString(jsonEncode({'completed': completedPaths.toList()}));
+  }
+
+  /// Cache the raw ZIP bytes so we don't have to re-download on resume.
+  static Future<void> cacheZipBytes(List<int> zipBytes) async {
+    final dir = await _cacheDir();
+    final file = File('${dir.path}/$_cachedZipFileName');
+    await file.writeAsBytes(zipBytes);
+  }
+
+  /// Load cached ZIP bytes for resume.
+  static Future<List<int>?> loadCachedZip() async {
+    final dir = await _cacheDir();
+    final file = File('${dir.path}/$_cachedZipFileName');
+    if (!await file.exists()) return null;
+    return await file.readAsBytes();
+  }
+
+  /// Delete all clone cache files (call on completion or manual reset).
+  static Future<void> clearCache() async {
+    final dir = await _cacheDir();
+    if (await dir.exists()) await dir.delete(recursive: true);
+  }
+
+  /// Extract .sub files from already-downloaded ZIP bytes.
+  /// Same logic as [downloadAndExtract] phase 2, but without downloading.
+  static List<SubFileEntry> extractFromBytes(
+    List<int> zipBytes, {
+    void Function(String phase, String detail, double fraction)? onProgress,
+  }) {
+    onProgress?.call('extract', 'Decompressing cached ZIP...', 0.0);
+
+    final archive = ZipDecoder().decodeBytes(zipBytes);
+    final subFiles = <SubFileEntry>[];
+    String? rootPrefix;
+    const String subghzFolder = 'subghz/';
+
+    int processed = 0;
+    final total = archive.files.length;
+
+    for (final file in archive.files) {
+      processed++;
+      if (file.isFile) {
+        final name = file.name;
+        rootPrefix ??= _extractRootPrefix(name);
+
+        if (name.toLowerCase().endsWith('.sub')) {
+          String relativePath = name;
+          if (rootPrefix != null && relativePath.startsWith(rootPrefix)) {
+            relativePath = relativePath.substring(rootPrefix.length);
+          }
+          if (relativePath.startsWith(subghzFolder)) {
+            relativePath = relativePath.substring(subghzFolder.length);
+          }
+          if (relativePath.isNotEmpty) {
+            subFiles.add(SubFileEntry(
+              relativePath: relativePath,
+              content: Uint8List.fromList(file.content as List<int>),
+            ));
+          }
+        }
+      }
+      if (total > 0) {
+        onProgress?.call(
+          'extract',
+          'Extracting files... (${subFiles.length} .sub files found)',
+          processed / total,
+        );
+      }
+    }
+
+    onProgress?.call('extract', '${subFiles.length} .sub files extracted', 1.0);
+    return subFiles;
+  }
 }

mobile_app/lib/services/update_service.dart

@@ -87,8 +87,8 @@ class UpdateService {
       String currentVersion) async {
     try {
       final releases = await _fetchReleases();
-      // Fetch structured changelog in parallel
-      final changelogData = await fetchChangelog();
+      // Fetch structured changelog from release assets
+      final changelogData = await fetchChangelog(releases);
 
       String? bestVersion;
       Map<String, dynamic>? bestRelease;
@@ -154,8 +154,8 @@ class UpdateService {
   static Future<AppUpdate?> checkAppUpdate(String currentVersion) async {
     try {
       final releases = await _fetchReleases();
-      // Fetch structured changelog in parallel
-      final changelogData = await fetchChangelog();
+      // Fetch structured changelog from release assets
+      final changelogData = await fetchChangelog(releases);
 
       String? bestVersion;
       Map<String, dynamic>? bestRelease;
@@ -329,25 +329,52 @@ class UpdateService {
     return await getTemporaryDirectory();
   }
 
-  /// URL to the structured changelog.json in the repository.
-  static const String _changelogUrl =
-      'https://raw.githubusercontent.com/$githubOwner/$githubRepo/main/releases/changelog.json';
-
-  /// Fetch the structured changelog from changelog.json.
+  /// Fetch the structured changelog from changelog.json in release assets.
+  /// Searches through releases to find changelog.json as an asset.
   /// Returns a map with "firmware" and "app" lists parsed from the JSON.
   /// Returns null on failure (non-fatal — falls back to release body).
-  static Future<Map<String, dynamic>?> fetchChangelog() async {
+  static Future<Map<String, dynamic>?> fetchChangelog(List<dynamic> releases) async {
+    // Try to find changelog.json in release assets (newest first)
+    for (final release in releases) {
+      if (release['draft'] == true) continue;
+      final assets = release['assets'] as List? ?? [];
+      
+      // Look for changelog.json asset
+      for (final asset in assets) {
+        final name = asset['name'] as String? ?? '';
+        if (name.toLowerCase() == 'changelog.json') {
+          final downloadUrl = asset['browser_download_url'] as String?;
+          if (downloadUrl == null) continue;
+          
+          try {
+            final response = await http.get(
+              Uri.parse(downloadUrl),
+            ).timeout(_timeout);
+            if (response.statusCode == 200) {
+              return jsonDecode(response.body) as Map<String, dynamic>;
+            }
+          } catch (e) {
+            // Continue searching in other releases
+            continue;
+          }
+        }
+      }
+    }
+    
+    // Fallback: try legacy URL from main branch (for backward compatibility)
     try {
+      const legacyUrl = 'https://raw.githubusercontent.com/$githubOwner/$githubRepo/main/releases/changelog.json';
       final response = await http.get(
-        Uri.parse(_changelogUrl),
+        Uri.parse(legacyUrl),
       ).timeout(_timeout);
       if (response.statusCode == 200) {
         return jsonDecode(response.body) as Map<String, dynamic>;
       }
-      return null;
     } catch (_) {
-      return null;
+      // Ignore fallback errors
     }
+    
+    return null;
   }
 
   /// Extract structured changes list for a specific version from changelog.json.

mobile_app/lib/widgets/quick_connect_widget.dart

@@ -169,18 +169,26 @@ class QuickConnectWidget extends StatelessWidget {
     } else {
       // No saved devices - show scan button or scan results
       List<dynamic> supportedDevices = bleProvider.supportedScanResults;
-      if (supportedDevices.isNotEmpty) {
-        // Show found supported devices
+
+      // Fallback: if no supported devices found but scan returned results,
+      // show ALL nearby BLE devices so user can manually select (e.g. renamed device)
+      final bool isFallback = supportedDevices.isEmpty && bleProvider.scanResults.isNotEmpty;
+      final List<dynamic> devicesToShow = isFallback ? bleProvider.scanResults : supportedDevices;
+
+      if (devicesToShow.isNotEmpty) {
+        // Show found devices
         return Column(
           children: [
             Text(
-              AppLocalizations.of(context)!.foundSupportedDevicesCount(supportedDevices.length),
+              isFallback
+                  ? AppLocalizations.of(context)!.noSupportedDevicesShowAll
+                  : AppLocalizations.of(context)!.foundSupportedDevicesCount(devicesToShow.length),
               style: Theme.of(context).textTheme.bodySmall?.copyWith(
-                color: AppColors.secondaryText,
+                color: isFallback ? AppColors.warning : AppColors.secondaryText,
               ),
             ),
             const SizedBox(height: 8),
-            ...supportedDevices.map((result) => Container(
+            ...devicesToShow.map((result) => Container(
               width: double.infinity,
               margin: const EdgeInsets.only(bottom: 8),
               padding: const EdgeInsets.all(12),
@@ -190,8 +198,8 @@ class QuickConnectWidget extends StatelessWidget {
               ),
               child: Row(
                 children: [
-                  const Icon(
-                    Icons.bluetooth,
+                  Icon(
+                    isFallback ? Icons.bluetooth_searching : Icons.bluetooth,
                     color: AppColors.info,
                     size: 20,
                   ),

mobile_app/lib/widgets/status_bar_widget.dart

@@ -96,7 +96,7 @@ class _StatusBarWidgetState extends State<StatusBarWidget> {
             right: 0,
             child: Container(
               constraints: BoxConstraints(
-                maxHeight: MediaQuery.of(context).size.height * 0.6,
+                maxHeight: MediaQuery.of(context).size.height * 0.85,
               ),
               decoration: BoxDecoration(
                 color: Theme.of(context).colorScheme.surface,

mobile_app/pubspec.yaml

@@ -1,7 +1,7 @@
 name: evilcrow_rf2_controller
 description: EvilCrow RF — Mobile app for controlling RF devices via BLE
 publish_to: 'none'
-version: 1.0.2+15
+version: 1.1.0+25
 
 environment:
   sdk: '>=3.0.0 <4.0.0'

platformio.ini

@@ -1,12 +1,4 @@
-; PlatformIO Project Configuration File
-;
-;   Build options: build flags, source filter
-;   Upload options: custom upload port, speed and extra flags
-;   Library options: dependencies, extra library storages
-;   Advanced options: extra scripting
-;
-; Please visit documentation for the other options and examples
-; https://docs.platformio.org/page/projectconf.html
+
 
 [env:esp32dev]
 platform = espressif32

src/core/ble/BleAdapter.cpp

@@ -633,14 +633,15 @@ bool BleAdapter::handleUploadChunk(uint8_t chunkId, uint8_t chunkNum, uint8_t to
         }
         
         if (pathLength > 0) {
-            if (pathType != 4) strcat(fullPath, "/");
+            // pathType 4 (LittleFS root) and 5 (SD root) already end with '/'
+            if (pathType != 4 && pathType != 5) strcat(fullPath, "/");
             if (path[0] == '/') {
                 strncat(fullPath, path + 1, pathLength - 1);
             } else {
                 strncat(fullPath, path, pathLength);
             }
         } else {
-            if (pathType != 4) strcat(fullPath, "/");
+            if (pathType != 4 && pathType != 5) strcat(fullPath, "/");
         }
         
         ESP_LOGI(TAG, "Starting file upload: %s (pathType=%d)", fullPath, pathType);

src/main.cpp

@@ -174,6 +174,7 @@ void cc1101WorkerSignalDetectedHandler(const CC1101DetectedSignal& signal)
 struct DeviceConfig
 {
     bool powerBlink;
+    bool sdCardMounted;  // True if SD card is available
 } deviceConfig;
 
 // REMOVED - old state machine task (all code deleted, now using CC1101Worker)
@@ -621,13 +622,31 @@ void setup()
 
     ESP_LOGD(TAG, "Starting setup...");
 
+    // --- SD Card initialization (non-blocking) ---
     sdspi.begin(SD_SCLK, SD_MISO, SD_MOSI, SD_SS);
     if (!SD.begin(SD_SS, sdspi)) {
-        ESP_LOGE(TAG, "Card Mount Failed");
-        return;
-    }
+        ESP_LOGW(TAG, "SD card not mounted — running in LittleFS-only mode");
+        deviceConfig.sdCardMounted = false;
+        // Continue setup without SD — features requiring SD will be limited
+    } else {
+        deviceConfig.sdCardMounted = true;
+        ESP_LOGI(TAG, "SD card initialized.");
 
-    ESP_LOGD(TAG, "SD card initialized.");
+        // Ensure default directory structure exists on SD
+        static const char* defaultDirs[] = {
+            "/DATA",
+            "/DATA/RECORDS",
+            "/DATA/SIGNALS",
+            "/DATA/PRESETS",
+            "/DATA/TEMP"
+        };
+        for (int i = 0; i < 5; i++) {
+            if (!SD.exists(defaultDirs[i])) {
+                SD.mkdir(defaultDirs[i]);
+                ESP_LOGI(TAG, "Created missing directory: %s", defaultDirs[i]);
+            }
+        }
+    }
 
     ControllerAdapter::initializeQueue();
 
@@ -716,7 +735,7 @@ void setup()
 #endif
 
     // Notification sender on Core 0 (near BLE stack for lower latency)
-    xTaskCreatePinnedToCore(ClientsManager::processMessageQueue, "SendNotifications", 2560, NULL, 1, NULL, 0); // 2.5KB on Core 0
+    xTaskCreatePinnedToCore(ClientsManager::processMessageQueue, "SendNotifications", 4096, NULL, 1, NULL, 0); // 4KB on Core 0
     ESP_LOGD(TAG, "SendNotifications task created.");
     
     // Create time synchronization task (updates deviceTime every second)

src/modules/CC1101_driver/CC1101_Worker.cpp

@@ -1,5 +1,6 @@
 #include "CC1101_Worker.h"
 #include <sstream>  // Moved here from CC1101_Worker.h — only used in this .cpp
+#include <LittleFS.h>  // For pathType 4 (internal flash) transmit support
 #include "FlipperSubFile.h"
 #include "modules/subghz_function/StreamingSubFileParser.h"
 #include "StreamingPulsePayload.h"
@@ -904,29 +905,44 @@ bool CC1101Worker::transmitRaw(int module, float frequency, int modulation, floa
 std::string CC1101Worker::transmitSub(const std::string& filename, int module, int repeat, int pathType)
 {
     std::string fullPath;
+    // Determine filesystem: pathType 4 = LittleFS, all others = SD
+    bool useLittleFS = (pathType == 4);
+    fs::FS& fs = useLittleFS ? (fs::FS&)LittleFS : (fs::FS&)SD;
+
     // If path is already absolute (/DATA/...), use it directly
     if (filename.find("/DATA/") == 0) {
         fullPath = filename;
         ESP_LOGD(TAG, "Using full system path: %s", fullPath.c_str());
     } else {
         // Use pathType to determine subdirectory
+        // 0=RECORDS, 1=SIGNALS, 2=PRESETS, 3=TEMP, 4=INTERNAL(LittleFS root), 5=SD root
         static const char* DIRS[] = {"/DATA/RECORDS", "/DATA/SIGNALS", "/DATA/PRESETS", "/DATA/TEMP"};
         if (pathType >= 0 && pathType < 4) {
             fullPath = std::string(DIRS[pathType]) + "/" + filename;
             ESP_LOGD(TAG, "Using pathType %d: %s", pathType, DIRS[pathType]);
+        } else if (pathType == 4 || pathType == 5) {
+            // Root-based storage: LittleFS root (4) or SD root (5)
+            // filename is relative to root, ensure it starts with "/"
+            if (!filename.empty() && filename[0] == '/') {
+                fullPath = filename;
+            } else {
+                fullPath = "/" + filename;
+            }
+            ESP_LOGI(TAG, "Using pathType %d (%s root): %s",
+                     pathType, useLittleFS ? "LittleFS" : "SD", fullPath.c_str());
         } else {
             fullPath = std::string("/DATA/RECORDS/") + filename;
             ESP_LOGW(TAG, "Unknown pathType %d; default RECORDS", pathType);
         }
         ESP_LOGD(TAG, "Added base path, full path: %s", fullPath.c_str());
     }
-    ESP_LOGI(TAG, "Opening file: %s", fullPath.c_str());
-    if (!SD.exists(fullPath.c_str())) {
+    ESP_LOGI(TAG, "Opening file: %s (fs=%s)", fullPath.c_str(), useLittleFS ? "LittleFS" : "SD");
+    if (!fs.exists(fullPath.c_str())) {
         std::string msg = "File does not exist: " + fullPath;
         ESP_LOGE(TAG, "%s", msg.c_str());
         return msg;
     }
-    File file = SD.open(fullPath.c_str(), FILE_READ);
+    File file = fs.open(fullPath.c_str(), FILE_READ);
     if (!file) {
         std::string msg = "Failed to open file: " + fullPath;
         ESP_LOGE(TAG, "%s", msg.c_str());
@@ -934,6 +950,13 @@ std::string CC1101Worker::transmitSub(const std::string& filename, int module, i
     }
     ESP_LOGD(TAG, "File opened successfully, size: %d bytes", file.size());
     file.close(); // Close immediately - will reopen for streaming
+
+    // Transmission from LittleFS is not supported yet (parsers use SD internally)
+    if (useLittleFS) {
+        std::string msg = "Transmission from internal flash (LittleFS) not supported";
+        ESP_LOGE(TAG, "%s", msg.c_str());
+        return msg;
+    }
     
     // OPTIMIZED: Use StreamingSubFileParser (minimal RAM usage!)
     StreamingSubFileParser streamParser;