diff --git a/build.sh b/build.sh
index 80ff4cdf..b5044ad4 100755
--- a/build.sh
+++ b/build.sh
@@ -140,7 +140,8 @@ build_firmware() {
 
   # set firmware version string
   # e.g: v1.0.0-abcdef
-  FIRMWARE_VERSION_STRING="${FIRMWARE_VERSION}-${COMMIT_HASH}"
+  # FIRMWARE_VERSION_STRING="${FIRMWARE_VERSION}-${COMMIT_HASH}"
+  FIRMWARE_VERSION_STRING="${FIRMWARE_VERSION}"
 
   # craft filename
   # e.g: RAK_4631_Repeater-v1.0.0-SHA
@@ -158,8 +159,8 @@ build_firmware() {
   # build merge-bin for esp32 fresh install, copy .bins to out folder (e.g: Heltec_v3_room_server-v1.0.0-SHA.bin)
   if [ "$ENV_PLATFORM" == "ESP32_PLATFORM" ]; then
     pio run -t mergebin -e $1
-    cp .pio/build/$1/firmware.bin out/${FIRMWARE_FILENAME}.bin 2>/dev/null || true
-    cp .pio/build/$1/firmware-merged.bin out/${FIRMWARE_FILENAME}-merged.bin 2>/dev/null || true
+    cp .pio/build/$1/firmware.bin out/${FIRMWARE_FILENAME}-upgrade.bin 2>/dev/null || true
+    cp .pio/build/$1/firmware-merged.bin out/${FIRMWARE_FILENAME}-freshInstall-merged.bin 2>/dev/null || true
   fi
 
   # build .uf2 for nrf52 boards, copy .uf2 and .zip to out folder (e.g: RAK_4631_Repeater-v1.0.0-SHA.uf2)