Revise automotive RKE security references and add new entries, fixed a DOI

Removed the Implemented Protocols section from the README.

README.md

@@ -16,7 +16,6 @@ This project may incorporate, adapt, or build upon **other open-source projects*
 - [Supported Systems](#supported-systems)
 - [How to Build](#how-to-build)
 - [Project Scope](#project-scope)
-- [Implemented Protocols](#implemented-protocols)
 - [To Do / Planned Features](#to-do--planned-features)
 - [Design Philosophy](#design-philosophy)
 - [Research Direction](#research-direction)
@@ -132,22 +131,10 @@ Flipper-ARF aims to achieve:
 
 ---
 
-## Implemented Protocols
-
-- [x] Mazda Siemens Protocol (5WK49365D) — ported from open-source references (testing required)
-- [x] Full VAG, Fiat, Ford, Subaru, Kia, PSA support
-- [x] D-Pad mapping (Lock / Unlock / Boot / Trunk) during emulation
-- [x] VAG MFKey support and updated Keeloq codes
-- [x] PSA XTEA brute force for saved → emulation workflow
-- [x] Brute force of counter in saved → can be accellerated trough the companion app via bluetooth
-- [X] Keeloq Key Manager inside firmware
-- [x] RollJam app (Internal CC1101 for RX & TX captured signal; External CC1101 for jamming) — requires more real-world testing (no available yet)
-
----
-
 ## To Do / Planned Features
 
 - [ ] Add Scher Khan & Starline protocols
+- [ ] Marelli BSI encodere and encryption
 - [ ] Fix and reintegrate RollJam app (future updates)
 - [ ] Expand and refine Subaru, Kia, PSA, and other manufacturer protocols
 - [ ] Improve collaboration workflow to avoid overlapping work
@@ -202,7 +189,8 @@ The following academic publications have been invaluable to the development and
 
 - **Lock It and Still Lose It — On the (In)Security of Automotive Remote Keyless Entry Systems**
   Flavio D. Garcia, David Oswald, Timo Kasper, Pierre Pavlidès
-  *USENIX Security 2016*
+  *USENIX Security 2016, pp. 929–944*
+  DOI: [10.5555/3241094.3241166](https://doi.org/10.5555/3241094.3241166)
   https://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_garcia.pdf
 
 - **Clonable Key Fobs: Analyzing and Breaking RKE Protocols**
@@ -225,33 +213,65 @@ The following academic publications have been invaluable to the development and
   *Wiley, February 2025*
   DOI: [10.1002/9781394351930.ch11](https://doi.org/10.1002/9781394351930.ch11)
 
+### DST Cipher Family (DST40 / DST80)
+
+- **Security Analysis of a Cryptographically-Enabled RFID Device**
+  Steve Bono, Matthew Green, Adam Stubblefield, Ari Juels, Avi Rubin, Michael Szydlo
+  *14th USENIX Security Symposium (USENIX Security '05)*
+  https://www.usenix.org/conference/14th-usenix-security-symposium/security-analysis-cryptographically-enabled-rfid-device
+  https://www.usenix.org/legacy/event/sec05/tech/bono/bono.pdf
+
+- **Dismantling DST80-based Immobiliser Systems**
+  Lennert Wouters, Jan Van den Herrewegen, Flavio D. Garcia, David Oswald, Benedikt Gierlichs, Bart Preneel
+  *IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2020, Vol. 2020(2), pp. 99–127*
+  DOI: [10.13154/tches.v2020.i2.99-127](https://doi.org/10.13154/tches.v2020.i2.99-127)
+
 ### KeeLoq Cryptanalysis
 
 - **Cryptanalysis of the KeeLoq Block Cipher**
   Andrey Bogdanov
-  *Cryptology ePrint Archive, Paper 2007/055*
+  *Cryptology ePrint Archive, Paper 2007/055; also presented at RFIDSec 2007*
   https://eprint.iacr.org/2007/055
 
-- **On the Power of Power Analysis in the Real World: A Complete Break of the KeeLoq Code Hopping Scheme**
-  Thomas Eisenbarth, Timo Kasper, Amir Moradi, Christof Paar, Mahmoud Salmasizadeh, Mohammad T. Manzuri Shalmani
-  *CRYPTO 2008*
-  https://www.iacr.org/archive/crypto2008/51570204/51570204.pdf
-
 - **A Practical Attack on KeeLoq**
   Sebastiaan Indesteege, Nathan Keller, Orr Dunkelman, Eli Biham, Bart Preneel
-  *EUROCRYPT 2008*
+  *EUROCRYPT 2008 (LNCS vol. 4965, pp. 1–18)*
+  DOI: [10.1007/978-3-540-78967-3_1](https://doi.org/10.1007/978-3-540-78967-3_1)
   https://www.iacr.org/archive/eurocrypt2008/49650001/49650001.pdf
 
+- **Algebraic and Slide Attacks on KeeLoq**
+  Nicolas T. Courtois, Gregory V. Bard, David Wagner
+  *FSE 2008 (LNCS vol. 5086, pp. 97–115)*
+  DOI: [10.1007/978-3-540-71039-4_6](https://doi.org/10.1007/978-3-540-71039-4_6)
+
+- **On the Power of Power Analysis in the Real World: A Complete Break of the KeeLoq Code Hopping Scheme**
+  Thomas Eisenbarth, Timo Kasper, Amir Moradi, Christof Paar, Mahmoud Salmasizadeh, Mohammad T. Manzuri Shalmani
+  *CRYPTO 2008 (LNCS vol. 5157, pp. 203–220)*
+  DOI: [10.1007/978-3-540-85174-5_12](https://doi.org/10.1007/978-3-540-85174-5_12)
+  https://www.iacr.org/archive/crypto2008/51570204/51570204.pdf
+
 - **Breaking KeeLoq in a Flash: On Extracting Keys at Lightning Speed**
-  *Springer*
+  Markus Kasper, Timo Kasper, Amir Moradi, Christof Paar
+  *AFRICACRYPT 2009 (LNCS vol. 5580, pp. 403–420)*
   DOI: [10.1007/978-3-642-02384-2_25](https://doi.org/10.1007/978-3-642-02384-2_25)
 
-### Immobiliser & Transponder Systems
+### Immobiliser & Transponder Cipher Attacks
 
-- **Dismantling DST80-based Immobiliser Systems**
-  Lennert Wouters, Jan Van den Herrewegen, Flavio D. Garcia, David Oswald, Benedikt Gierlichs, Bart Preneel
-  *IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2020, Vol. 2*
-  DOI: [10.13154/tches.v2020.i2.99-127](https://doi.org/10.13154/tches.v2020.i2.99-127)
+- **Gone in 360 Seconds: Hijacking with Hitag2**
+  Roel Verdult, Flavio D. Garcia, Josep Balasch
+  *21st USENIX Security Symposium (USENIX Security '12), pp. 237–252*
+  DOI: [10.5555/2362793.2362830](https://doi.org/10.5555/2362793.2362830)
+  https://www.usenix.org/system/files/conference/usenixsecurity12/sec12-final95.pdf
+
+- **Dismantling Megamos Crypto: Wirelessly Lockpicking a Vehicle Immobilizer**
+  Roel Verdult, Flavio D. Garcia, Baris Ege
+  *Supplement to 22nd USENIX Security Symposium (USENIX Security '13/15), pp. 703–718*
+  https://www.usenix.org/sites/default/files/sec15_supplement.pdf
+
+- **Dismantling the AUT64 Automotive Cipher**
+  Christopher Hicks, Flavio D. Garcia, David Oswald
+  *IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2018, Vol. 2018(2), pp. 46–69*
+  DOI: [10.13154/tches.v2018.i2.46-69](https://doi.org/10.13154/tches.v2018.i2.46-69)
 
 ### RFID & Protocol Analysis Tooling
 
@@ -262,6 +282,11 @@ The following academic publications have been invaluable to the development and
 
 ### Relay & Replay Attacks
 
+- **Relay Attacks on Passive Keyless Entry and Start Systems in Modern Cars**
+  Aurélien Francillon, Boris Danev, Srdjan Čapkun
+  *NDSS 2011*
+  https://www.ndss-symposium.org/ndss2011/relay-attacks-on-passive-keyless-entry-and-start-systems-in-modern-cars/
+
 - **Implementing and Testing RollJam on Software-Defined Radios**
   *Università di Bologna (UNIBO), CRIS*
   https://cris.unibo.it/handle/11585/999874
@@ -272,13 +297,14 @@ The following academic publications have been invaluable to the development and
 
 - **RollBack: A New Time-Agnostic Replay Attack Against the Automotive Remote Keyless Entry Systems**
   Levente Csikor, Hoon Wei Lim, Jun Wen Wong, Soundarya Ramesh, Rohini Poolat Parameswarath, Mun Choon Chan
-  *ACM*
+  *Black Hat USA 2022; ACM Transactions on Cyber-Physical Systems, 2024*
   DOI: [10.1145/3627827](https://doi.org/10.1145/3627827)
+  https://i.blackhat.com/USA-22/Thursday/US-22-Csikor-Rollback-A-New-Time-Agnostic-Replay-wp.pdf
 
-- **Relay Attacks on Passive Keyless Entry and Start Systems in Modern Cars**
-  Aurelien Francillon, Boris Danev, Srdjan Capkun
-  *NDSS 2011*
-  https://www.ndss-symposium.org/ndss2011/relay-attacks-on-passive-keyless-entry-and-start-systems-in-modern-cars/
+- **Rolling-PWN Attack (Honda RKE Vulnerability)**
+  Kevin2600 (Haoqi Shan), Wesley Li — Star-V Lab
+  *Independent disclosure, 2022 (CVE-2021-46145)*
+  https://rollingpwn.github.io/rolling-pwn/
 
 ---
 

applications/main/subghz/helpers/subghz_txrx.c

@@ -1,5 +1,6 @@
 #include "subghz_txrx_i.h" // IWYU pragma: keep
 
+#include <math.h>
 #include <lib/subghz/protocols/protocol_items.h>
 #include <applications/drivers/subghz/cc1101_ext/cc1101_ext_interconnect.h>
 #include <lib/subghz/devices/cc1101_int/cc1101_int_interconnect.h>
@@ -494,28 +495,39 @@ void subghz_txrx_hopper_pause(SubGhzTxRx* instance) {
     }
 }
 
-#define SUBGHZ_MOD_HOPPER_DWELL_TICKS 3
-
 bool subghz_txrx_mod_hopper_get_running(SubGhzTxRx* instance) {
     furi_assert(instance);
     return instance->mod_hopper_running;
 }
 
-void subghz_txrx_mod_hopper_set_running(SubGhzTxRx* instance, bool running) {
+void subghz_txrx_mod_hopper_set_running(
+    SubGhzTxRx* instance,
+    bool running,
+    uint8_t dwell_ticks,
+    float rssi_threshold) {
     furi_assert(instance);
     instance->mod_hopper_running = running;
-    if(running) instance->mod_hopper_timer = SUBGHZ_MOD_HOPPER_DWELL_TICKS;
+    instance->mod_hopper_dwell = dwell_ticks;
+    instance->mod_hopper_rssi_threshold = rssi_threshold;
+    if(running) instance->mod_hopper_timer = dwell_ticks;
 }
 
-void subghz_txrx_mod_hopper_update(SubGhzTxRx* instance) {
+void subghz_txrx_mod_hopper_update(SubGhzTxRx* instance, float current_rssi) {
     furi_assert(instance);
     if(!instance->mod_hopper_running) return;
 
+    // If RSSI gating is enabled and signal is present, pause hopping
+    if(!isnan(instance->mod_hopper_rssi_threshold) &&
+       current_rssi > instance->mod_hopper_rssi_threshold) {
+        instance->mod_hopper_timer = instance->mod_hopper_dwell;
+        return;
+    }
+
     if(instance->mod_hopper_timer > 0) {
         instance->mod_hopper_timer--;
         return;
     }
-    instance->mod_hopper_timer = SUBGHZ_MOD_HOPPER_DWELL_TICKS;
+    instance->mod_hopper_timer = instance->mod_hopper_dwell;
 
     size_t count = subghz_setting_get_preset_count(instance->setting);
     if(count == 0) return;

applications/main/subghz/helpers/subghz_txrx.h

@@ -166,19 +166,27 @@ void subghz_txrx_hopper_pause(SubGhzTxRx* instance);
 
 /**
  * Update modulation (preset) CC1101 in automatic mode (mod hopper)
- * Cycles through available presets at a fixed dwell time.
+ * Cycles through available presets at the configured dwell time.
+ * Pauses hopping when current_rssi exceeds the configured threshold.
  *
- * @param instance Pointer to a SubGhzTxRx
+ * @param instance     Pointer to a SubGhzTxRx
+ * @param current_rssi Current RSSI reading from the radio
  */
-void subghz_txrx_mod_hopper_update(SubGhzTxRx* instance);
+void subghz_txrx_mod_hopper_update(SubGhzTxRx* instance, float current_rssi);
 
 /**
- * Set mod hopper running state
+ * Set mod hopper running state with configuration
  *
- * @param instance Pointer to a SubGhzTxRx
- * @param running  true to enable, false to disable
+ * @param instance        Pointer to a SubGhzTxRx
+ * @param running         true to enable, false to disable
+ * @param dwell_ticks     Ticks to dwell on each modulation (100ms per tick)
+ * @param rssi_threshold  RSSI threshold to pause hopping (NAN = no gating)
  */
-void subghz_txrx_mod_hopper_set_running(SubGhzTxRx* instance, bool running);
+void subghz_txrx_mod_hopper_set_running(
+    SubGhzTxRx* instance,
+    bool running,
+    uint8_t dwell_ticks,
+    float rssi_threshold);
 
 /**
  * Get mod hopper running state

applications/main/subghz/helpers/subghz_txrx_i.h

@@ -19,9 +19,11 @@ struct SubGhzTxRx {
     bool is_database_loaded;
     SubGhzHopperState hopper_state;
 
-    uint8_t mod_hopper_idx;     // index into setting presets (wraps around)
-    uint8_t mod_hopper_timer;   // countdown ticks before advancing modulation
-    bool mod_hopper_running;    // is mod hopping active
+    uint8_t mod_hopper_idx;            // index into setting presets (wraps around)
+    uint8_t mod_hopper_timer;          // countdown ticks before advancing modulation
+    uint8_t mod_hopper_dwell;          // stored dwell ticks (configurable)
+    float mod_hopper_rssi_threshold;   // RSSI threshold; NAN = no RSSI gating
+    bool mod_hopper_running;           // is mod hopping active
 
     SubGhzTxRxState txrx_state;
     SubGhzSpeakerState speaker_state;

applications/main/subghz/scenes/subghz_scene_receiver.c

@@ -1,4 +1,5 @@
 #include "../subghz_i.h"
+#include <math.h>
 #include <dolphin/dolphin.h>
 #include <lib/subghz/protocols/bin_raw.h>
 
@@ -213,7 +214,11 @@ void subghz_scene_receiver_on_enter(void* context) {
     } else {
         subghz_txrx_hopper_set_state(subghz->txrx, SubGhzHopperStateOFF);
     }
-    subghz_txrx_mod_hopper_set_running(subghz->txrx, subghz->last_settings->enable_mod_hopping);
+    subghz_txrx_mod_hopper_set_running(
+        subghz->txrx,
+        !isnan(subghz->last_settings->mod_hopping_threshold),
+        (uint8_t)subghz->last_settings->mod_hopping_dwell,
+        subghz->last_settings->mod_hopping_threshold);
 
     subghz_txrx_rx_start(subghz->txrx);
     subghz_view_receiver_set_idx_menu(subghz->subghz_receiver, subghz->idx_menu_chosen);
@@ -303,7 +308,8 @@ bool subghz_scene_receiver_on_event(void* context, SceneManagerEvent event) {
             subghz_scene_receiver_update_statusbar(subghz);
         }
         if(subghz_txrx_mod_hopper_get_running(subghz->txrx)) {
-            subghz_txrx_mod_hopper_update(subghz->txrx);
+            float rssi = subghz_txrx_radio_device_get_rssi(subghz->txrx);
+            subghz_txrx_mod_hopper_update(subghz->txrx, rssi);
             subghz_scene_receiver_update_statusbar(subghz);
         }
 

applications/main/subghz/scenes/subghz_scene_receiver_config.c

@@ -1,5 +1,6 @@
 #include "../subghz_i.h"
 #include <lib/toolbox/value_index.h>
+#include <math.h>
 
 #define TAG "SubGhzSceneReceiverConfig"
 
@@ -81,6 +82,44 @@ const float hopping_mode_value[HOPPING_MODE_COUNT] = {
     -40.0f,
 };
 
+#define MOD_HOP_DBM_COUNT 8
+const char* const mod_hop_dbm_text[MOD_HOP_DBM_COUNT] = {
+    "OFF",
+    "-90",
+    "-85",
+    "-80",
+    "-75",
+    "-70",
+    "-65",
+    "-60",
+};
+const float mod_hop_dbm_value[MOD_HOP_DBM_COUNT] = {
+    NAN,
+    -90.0f,
+    -85.0f,
+    -80.0f,
+    -75.0f,
+    -70.0f,
+    -65.0f,
+    -60.0f,
+};
+
+#define MOD_HOP_TIME_COUNT 5
+const char* const mod_hop_time_text[MOD_HOP_TIME_COUNT] = {
+    "0.5s",
+    "1s",
+    "2s",
+    "5s",
+    "10s",
+};
+const uint32_t mod_hop_time_ticks[MOD_HOP_TIME_COUNT] = {
+    5,
+    10,
+    20,
+    50,
+    100,
+};
+
 #define COMBO_BOX_COUNT 2
 
 const uint32_t hopping_value[COMBO_BOX_COUNT] = {
@@ -276,13 +315,31 @@ static void subghz_scene_receiver_config_set_hopping(VariableItem* item) {
         subghz->txrx, index != 0 ? SubGhzHopperStateRunning : SubGhzHopperStateOFF);
 }
 
-static void subghz_scene_receiver_config_set_mod_hopping(VariableItem* item) {
+static void subghz_scene_receiver_config_set_mod_hop_dbm(VariableItem* item) {
     SubGhz* subghz = variable_item_get_context(item);
     uint8_t index = variable_item_get_current_value_index(item);
-    variable_item_set_current_value_text(item, combobox_text[index]);
-    bool enabled = index == 1;
-    subghz->last_settings->enable_mod_hopping = enabled;
-    subghz_txrx_mod_hopper_set_running(subghz->txrx, enabled);
+    variable_item_set_current_value_text(item, mod_hop_dbm_text[index]);
+    subghz->last_settings->mod_hopping_threshold = mod_hop_dbm_value[index];
+    bool enabled = index != 0;
+    subghz_txrx_mod_hopper_set_running(
+        subghz->txrx,
+        enabled,
+        (uint8_t)subghz->last_settings->mod_hopping_dwell,
+        mod_hop_dbm_value[index]);
+}
+
+static void subghz_scene_receiver_config_set_mod_hop_time(VariableItem* item) {
+    SubGhz* subghz = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    variable_item_set_current_value_text(item, mod_hop_time_text[index]);
+    subghz->last_settings->mod_hopping_dwell = mod_hop_time_ticks[index];
+    if(subghz_txrx_mod_hopper_get_running(subghz->txrx)) {
+        subghz_txrx_mod_hopper_set_running(
+            subghz->txrx,
+            true,
+            (uint8_t)mod_hop_time_ticks[index],
+            subghz->last_settings->mod_hopping_threshold);
+    }
 }
 
 static void subghz_scene_receiver_config_set_speaker(VariableItem* item) {
@@ -385,8 +442,9 @@ static void subghz_scene_receiver_config_var_list_enter_callback(void* context,
 
         subghz_txrx_hopper_set_state(subghz->txrx, hopping_value[default_index]);
         subghz->last_settings->enable_hopping = hopping_value[default_index];
-        subghz->last_settings->enable_mod_hopping = false;
-        subghz_txrx_mod_hopper_set_running(subghz->txrx, false);
+        subghz->last_settings->mod_hopping_threshold = NAN;
+        subghz->last_settings->mod_hopping_dwell = 20;
+        subghz_txrx_mod_hopper_set_running(subghz->txrx, false, 20, NAN);
 
         variable_item_list_set_selected_item(subghz->variable_item_list, default_index);
         variable_item_list_reset(subghz->variable_item_list);
@@ -451,16 +509,47 @@ void subghz_scene_receiver_config_on_enter(void* context) {
         variable_item_set_current_value_index(item, value_index);
         variable_item_set_current_value_text(item, hopping_mode_text[value_index]);
 
-        // Mod Hopping
-        item = variable_item_list_add(
-            subghz->variable_item_list,
-            "Mod Hopping",
-            COMBO_BOX_COUNT,
-            subghz_scene_receiver_config_set_mod_hopping,
-            subghz);
-        value_index = subghz->last_settings->enable_mod_hopping ? 1 : 0;
-        variable_item_set_current_value_index(item, value_index);
-        variable_item_set_current_value_text(item, combobox_text[value_index]);
+        // Mod Hop dBm
+        {
+            uint8_t mod_dbm_idx = 0; // OFF
+            float thresh = subghz->last_settings->mod_hopping_threshold;
+            if(!isnan(thresh)) {
+                for(uint8_t k = 1; k < MOD_HOP_DBM_COUNT; k++) {
+                    if(mod_hop_dbm_value[k] == thresh) {
+                        mod_dbm_idx = k;
+                        break;
+                    }
+                }
+                if(mod_dbm_idx == 0) mod_dbm_idx = 1; // fallback to -90
+            }
+            item = variable_item_list_add(
+                subghz->variable_item_list,
+                "Mod Hop dBm",
+                MOD_HOP_DBM_COUNT,
+                subghz_scene_receiver_config_set_mod_hop_dbm,
+                subghz);
+            variable_item_set_current_value_index(item, mod_dbm_idx);
+            variable_item_set_current_value_text(item, mod_hop_dbm_text[mod_dbm_idx]);
+        }
+
+        // Mod Hop Time
+        {
+            uint8_t mod_time_idx = 2; // default 2s
+            for(uint8_t k = 0; k < MOD_HOP_TIME_COUNT; k++) {
+                if(mod_hop_time_ticks[k] == subghz->last_settings->mod_hopping_dwell) {
+                    mod_time_idx = k;
+                    break;
+                }
+            }
+            item = variable_item_list_add(
+                subghz->variable_item_list,
+                "Mod Hop Time",
+                MOD_HOP_TIME_COUNT,
+                subghz_scene_receiver_config_set_mod_hop_time,
+                subghz);
+            variable_item_set_current_value_index(item, mod_time_idx);
+            variable_item_set_current_value_text(item, mod_hop_time_text[mod_time_idx]);
+        }
     }
 
     if(scene_manager_get_scene_state(subghz->scene_manager, SubGhzSceneReadRAW) !=

applications/main/subghz/subghz_last_settings.c

@@ -1,5 +1,6 @@
 #include "subghz_last_settings.h"
 #include "subghz_i.h"
+#include <math.h>
 
 #define TAG "SubGhzLastSettings"
 
@@ -13,7 +14,8 @@
 #define SUBGHZ_LAST_SETTING_FIELD_FREQUENCY_ANALYZER_TRIGGER        "FATrigger"
 #define SUBGHZ_LAST_SETTING_FIELD_PROTOCOL_FILE_NAMES               "ProtocolNames"
 #define SUBGHZ_LAST_SETTING_FIELD_HOPPING_ENABLE                    "Hopping"
-#define SUBGHZ_LAST_SETTING_FIELD_MOD_HOPPING                       "ModHopping"
+#define SUBGHZ_LAST_SETTING_FIELD_MOD_HOP_THRESHOLD                 "ModHopThreshold"
+#define SUBGHZ_LAST_SETTING_FIELD_MOD_HOP_DWELL                     "ModHopDwell"
 #define SUBGHZ_LAST_SETTING_FIELD_IGNORE_FILTER                     "IgnoreFilter"
 #define SUBGHZ_LAST_SETTING_FIELD_FILTER                            "Filter"
 #define SUBGHZ_LAST_SETTING_FIELD_RSSI_THRESHOLD                    "RSSI"
@@ -46,6 +48,8 @@ void subghz_last_settings_load(SubGhzLastSettings* instance, size_t preset_count
     instance->filter = SubGhzProtocolFlag_Decodable;
     instance->rssi = SUBGHZ_RAW_THRESHOLD_MIN;
     instance->hopping_threshold = -90.0f;
+    instance->mod_hopping_threshold = NAN; // disabled by default
+    instance->mod_hopping_dwell = 20;      // 2 seconds (20 × 100ms ticks)
     instance->leds_and_amp = true;
 
     Storage* storage = furi_record_open(RECORD_STORAGE);
@@ -99,10 +103,17 @@ void subghz_last_settings_load(SubGhzLastSettings* instance, size_t preset_count
                    1)) {
                 flipper_format_rewind(fff_data_file);
             }
-            if(!flipper_format_read_bool(
+            if(!flipper_format_read_float(
                    fff_data_file,
-                   SUBGHZ_LAST_SETTING_FIELD_MOD_HOPPING,
-                   &instance->enable_mod_hopping,
+                   SUBGHZ_LAST_SETTING_FIELD_MOD_HOP_THRESHOLD,
+                   &instance->mod_hopping_threshold,
+                   1)) {
+                flipper_format_rewind(fff_data_file);
+            }
+            if(!flipper_format_read_uint32(
+                   fff_data_file,
+                   SUBGHZ_LAST_SETTING_FIELD_MOD_HOP_DWELL,
+                   &instance->mod_hopping_dwell,
                    1)) {
                 flipper_format_rewind(fff_data_file);
             }
@@ -221,10 +232,17 @@ bool subghz_last_settings_save(SubGhzLastSettings* instance) {
                file, SUBGHZ_LAST_SETTING_FIELD_HOPPING_ENABLE, &instance->enable_hopping, 1)) {
             break;
         }
-        if(!flipper_format_write_bool(
+        if(!flipper_format_write_float(
                file,
-               SUBGHZ_LAST_SETTING_FIELD_MOD_HOPPING,
-               &instance->enable_mod_hopping,
+               SUBGHZ_LAST_SETTING_FIELD_MOD_HOP_THRESHOLD,
+               &instance->mod_hopping_threshold,
+               1)) {
+            break;
+        }
+        if(!flipper_format_write_uint32(
+               file,
+               SUBGHZ_LAST_SETTING_FIELD_MOD_HOP_DWELL,
+               &instance->mod_hopping_dwell,
                1)) {
             break;
         }

applications/main/subghz/subghz_last_settings.h

@@ -20,7 +20,8 @@ typedef struct {
     float frequency_analyzer_trigger;
     bool protocol_file_names;
     bool enable_hopping;
-    bool enable_mod_hopping;
+    float mod_hopping_threshold; // RSSI threshold for mod hopping, NAN = disabled
+    uint32_t mod_hopping_dwell;  // Dwell time in ticks (100ms units)
     uint32_t ignore_filter;
     uint32_t filter;
     float rssi;

lib/subghz/protocols/fiat_marelli.c

@@ -17,8 +17,9 @@
 //
 //   Frame layout (after stripping 16-bit 0xFFFF preamble):
 //     Bytes 0-3: Fixed ID / Serial (32 bits)
-//     Byte 4:    Button (upper nibble) | Type (lower nibble, always 0x2)
-//     Bytes 5-10: Rolling/encrypted code (48 bits)
+//     Byte 4:    Button (upper nibble) | Type (lower nibble)
+//                Buttons: 0x7=Lock, 0xB=Unlock, 0xD=Trunk
+//     Bytes 5-10: Rolling/encrypted code (48 bits)       
 #define FIAT_MARELLI_PREAMBLE_MIN  200  // Min preamble pulses (100 pairs)
 #define FIAT_MARELLI_GAP_MIN       2500 // Gap detection threshold (us)
 #define FIAT_MARELLI_SYNC_MIN      1500 // Sync pulse minimum (us)
@@ -402,10 +403,12 @@ SubGhzProtocolStatus subghz_protocol_decoder_fiat_marelli_deserialize(
 
 static const char* fiat_marelli_button_name(uint8_t btn) {
     switch(btn) {
-    case 0x2:
-        return "Btn A";
-    case 0x4:
-        return "Btn B";
+    case 0x7:
+        return "Lock";
+    case 0xB:
+        return "Unlock";
+    case 0xD:
+        return "Trunk";
     default:
         return "Unknown";
     }