diff --git a/App/CMakeLists.txt b/App/CMakeLists.txt
index e3e5b5d8..44f71d8f 100644
--- a/App/CMakeLists.txt
+++ b/App/CMakeLists.txt
@@ -117,16 +117,15 @@ endif()
 
 # ---- STOCK QUANSHENG FEATURES ----
 
-# ENABLE_FMRADIO compiles the BK1080 driver and the FM logic/helpers (fm.c).
-# The resident FM *screen* (ui/fmradio.c) is redundant with the FM overlay app,
-# so it is dropped when OVERLAY_APPS is on - the overlay app reaches the driver
-# and the fm.c helpers through the ABI instead, and ACTION_FM's launcher body is
-# neutralised in action.c so the resident screen can never open.
+# ENABLE_FMRADIO keeps the BK1080 driver and the FM data/helpers shared with the
+# overlay.  ENABLE_FMRADIO_EMBEDDED additionally selects the legacy resident
+# state machine and its integration with the main scheduler.
 enable_feature(ENABLE_FMRADIO
     driver/bk1080.c
     app/fm.c
 )
 if(ENABLE_FMRADIO AND NOT ENABLE_FEAT_F4HWN_OVERLAY_APPS)
+    target_compile_definitions(App INTERFACE ENABLE_FMRADIO_EMBEDDED)
     target_sources(App INTERFACE ui/fmradio.c)
 endif()
 enable_feature(ENABLE_AIRCOPY
diff --git a/App/app/action.c b/App/app/action.c
index 3e2f25a4..48c142e9 100644
--- a/App/app/action.c
+++ b/App/app/action.c
@@ -25,7 +25,7 @@
 #ifdef ENABLE_FLASHLIGHT
     #include "app/flashlight.h"
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #ifdef ENABLE_FEAT_F4HWN_OVERLAY_APPS
@@ -33,7 +33,7 @@
 #endif
 #include "app/scanner.h"
 #include "audio.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "driver/bk1080.h"
 #endif
 #include "driver/bk4819.h"
@@ -62,7 +62,7 @@
 static void ACTION_Beam(void);
 #endif
 
-#if defined(ENABLE_FMRADIO)
+#if defined(ENABLE_FMRADIO_EMBEDDED)
 static void ACTION_Scan_FM(bool bRestart);
 #endif
 
@@ -215,7 +215,7 @@ void ACTION_Monitor(void)
 
     RADIO_SetupRegisters(true);
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode) {
         FM_Start();
         gRequestDisplayScreen = DISPLAY_FM;
@@ -229,7 +229,7 @@ void ACTION_Scan(bool bRestart)
 {
     (void)bRestart;
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode) {
         ACTION_Scan_FM(bRestart);
         return;
@@ -322,7 +322,7 @@ void ACTION_SwitchDemodul(void)
 }
 
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
 inline static bool ACTION_IsBlockedInFM(uint8_t action)
 {
     switch (action) {
@@ -370,7 +370,7 @@ static void ACTION_Execute(uint8_t action)
         return;
     }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode && ACTION_IsBlockedInFM(action)) {
         gBeepToPlay = BEEP_500HZ_60MS_DOUBLE_BEEP_OPTIONAL;
         return;
@@ -587,6 +587,7 @@ void ACTION_FM(void)
 #endif  /* !ENABLE_FEAT_F4HWN_OVERLAY_APPS */
 }
 
+#ifdef ENABLE_FMRADIO_EMBEDDED
 static void ACTION_Scan_FM(bool bRestart)
 {
     if (FUNCTION_IsRx())
@@ -626,6 +627,7 @@ static void ACTION_Scan_FM(bool bRestart)
 #endif
 
 }
+#endif
 
 #endif
 
@@ -785,7 +787,7 @@ void ACTION_Mute(void)
     gMute = !gMute;
 
     // Update the registers
-    #ifdef ENABLE_FMRADIO
+    #ifdef ENABLE_FMRADIO_EMBEDDED
         BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, gMute ? 0x0A10 : 0x0A1F);
     #endif
     gEeprom.VOLUME_GAIN = gMute ? 0 : gEeprom.VOLUME_GAIN_BACKUP;
diff --git a/App/app/app.c b/App/app/app.c
index a6946c0e..2853169e 100644
--- a/App/app/app.c
+++ b/App/app/app.c
@@ -32,7 +32,7 @@
 #ifdef ENABLE_FLASHLIGHT
     #include "app/flashlight.h"
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "app/generic.h"
@@ -53,7 +53,7 @@
     // #include "bsp/dp32g030/pwmplus.h"
 #endif
 #include "driver/backlight.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "driver/bk1080.h"
 #endif
 #include "driver/bk4819.h"
@@ -111,8 +111,12 @@ void (*const ProcessKeysFunctions[])(KEY_Code_t Key, bool bKeyPressed, bool bKey
     [DISPLAY_MENU] = &MENU_ProcessKeys,
     [DISPLAY_SCANNER] = &SCANNER_ProcessKeys,
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     [DISPLAY_FM] = &FM_ProcessKeys,
+#elif defined(ENABLE_FMRADIO)
+    /* The modal FM overlay handles its own keys. Keep the enum slot populated
+       for configurations where DISPLAY_FM is the final display entry. */
+    [DISPLAY_FM] = &MAIN_ProcessKeys,
 #endif
 
 #ifdef ENABLE_AIRCOPY
@@ -246,7 +250,7 @@ static bool ScreenSaverCanDisplay(bool modal)
         gCurrentFunction == FUNCTION_TRANSMIT ||
         FUNCTION_IsRx() ||
         gPttIsPressed
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         || (gFM_ScanState != FM_SCAN_OFF && !gFM_FoundFrequency)
 #endif
 #ifdef ENABLE_FEAT_F4HWN_BEAM
@@ -260,7 +264,7 @@ static bool ScreenSaverCanDisplay(bool modal)
     if (modal || gScreenToDisplay == DISPLAY_MAIN)
         return true;
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gScreenToDisplay == DISPLAY_FM)
         return true;
 #endif
@@ -374,7 +378,7 @@ static void CheckForIncoming(void)
     if (!g_SquelchLost)
         return;          // squelch is closed
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     // FM scan in progress: ignore main-channel RX so scanning is not interrupted.
     // Normal FM listening (FM_SCAN_OFF) still yields to channel signals as before.
     if (gFmRadioMode && gFM_ScanState != FM_SCAN_OFF)
@@ -513,7 +517,7 @@ static void HandleIncoming(void)
     }
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     // Defensive: do not leave FM scan for a main-channel signal.
     if (gFmRadioMode && gFM_ScanState != FM_SCAN_OFF)
         return;
@@ -784,7 +788,7 @@ void APP_StartListening(FUNCTION_Type_t function)
         return;
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode)
         BK1080_Init0();
 #endif
@@ -853,7 +857,7 @@ void APP_StartListening(FUNCTION_Type_t function)
     RXTX_LOG_BeginRx(gRxVfo, function);
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (function == FUNCTION_MONITOR || gFmRadioMode)
 #else
     if (function == FUNCTION_MONITOR)
@@ -1159,7 +1163,7 @@ static void HandleVox(void)
         gVoxPauseCountdown = 0;
     }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode)
         return;
 #endif
@@ -1321,7 +1325,7 @@ void APP_Update(void)
     if (gCurrentFunction != FUNCTION_TRANSMIT)
         HandleFunction();
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
 //  if (gFmRadioCountdown_500ms > 0)
     if (gFmRadioMode && gFmRadioCountdown_500ms > 0)    // 1of11
         return;
@@ -1366,7 +1370,7 @@ void APP_Update(void)
 #ifdef ENABLE_VOICE
         && gVoiceWriteIndex == 0
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         && !gFmRadioMode
 #endif
 #ifdef ENABLE_DTMF_CALLING
@@ -1385,7 +1389,7 @@ void APP_Update(void)
         gScheduleDualWatch = false;
     }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gScheduleFM && gFM_ScanState != FM_SCAN_OFF && !FUNCTION_IsRx()) {
         // switch to FM radio mode
         FM_Play();
@@ -1405,7 +1409,7 @@ void APP_Update(void)
             || gScanStateDir != SCAN_OFF
             || gCssBackgroundScan
             || gScreenToDisplay != DISPLAY_MAIN
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
             || gFmRadioMode
 #endif
 #ifdef ENABLE_DTMF_CALLING
@@ -1760,7 +1764,7 @@ void APP_TimeSlice10ms(void)
 
     // Skipping authentic device checks
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode && gFmRadioCountdown_500ms > 0)   // 1of11
         return;
 #endif
@@ -1792,7 +1796,7 @@ void APP_TimeSlice10ms(void)
         }
     }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode && gFM_RestoreCountdown_10ms > 0) {
         if (--gFM_RestoreCountdown_10ms == 0) { 
             FM_Start(); // switch back to FM radio mode
@@ -1880,7 +1884,7 @@ void APP_TimeSlice500ms(void)
         {
 
             if (IS_MR_CHANNEL(gTxVfo->CHANNEL_SAVE) && (gInputBoxIndex > 0 && gInputBoxIndex < 4)
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
                 && (!gFmRadioMode)
 #endif
                 )
@@ -1927,7 +1931,7 @@ void APP_TimeSlice500ms(void)
 
     // Skipped authentic device check
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioCountdown_500ms > 0)
     {
         gFmRadioCountdown_500ms--;
@@ -2059,7 +2063,7 @@ void APP_TimeSlice500ms(void)
     }
 
     if (!gCssBackgroundScan && gScanStateDir == SCAN_OFF && !SCANNER_IsScanning()
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         && (gFM_ScanState == FM_SCAN_OFF || gAskToSave)
 #endif
 #ifdef ENABLE_AIRCOPY
@@ -2114,7 +2118,7 @@ void APP_TimeSlice500ms(void)
 
             GUI_DisplayType_t disp = DISPLAY_INVALID;
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
             if (gFmRadioMode && ! FUNCTION_IsRx()) {
                 disp = DISPLAY_FM;
             }
@@ -2136,7 +2140,7 @@ void APP_TimeSlice500ms(void)
 
     if (!gPttIsPressed && gVFOStateResumeCountdown_500ms > 0 && --gVFOStateResumeCountdown_500ms == 0) {
             RADIO_SetVfoState(VFO_STATE_NORMAL);
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         if (gFmRadioMode && !FUNCTION_IsRx()) {
             // switch back to FM radio mode
             FM_Start();
@@ -2289,7 +2293,7 @@ static void ProcessKey(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld)
             flagSaveSettings = false;
         }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         if (gFlagSaveFM) {
             SETTINGS_SaveFM();
             gFlagSaveFM = false;
@@ -2583,7 +2587,7 @@ Skip:
         gUpdateStatus        = true;
     }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gRequestSaveFM) {
         gRequestSaveFM = false;
         if (!bKeyHeld)
diff --git a/App/app/dtmf.c b/App/app/dtmf.c
index 64dd0477..138103af 100644
--- a/App/app/dtmf.c
+++ b/App/app/dtmf.c
@@ -18,7 +18,7 @@
 #include <stdio.h>   // NULL
 
 #include "app/chFrScanner.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "app/scanner.h"
@@ -279,7 +279,7 @@ void DTMF_HandleRequest(void)
 
                 gDTMF_ReplyState = DTMF_REPLY_AB;
 
-                #ifdef ENABLE_FMRADIO
+                #ifdef ENABLE_FMRADIO_EMBEDDED
                     if (gFmRadioMode)
                     {
                         FM_TurnOff();
diff --git a/App/app/fm.c b/App/app/fm.c
index 0d31fbf1..442f05ea 100644
--- a/App/app/fm.c
+++ b/App/app/fm.c
@@ -33,6 +33,7 @@
 #include "ui/ui.h"
 
 uint16_t          gFM_Channels[FM_CHANNELS_MAX];
+#ifdef ENABLE_FMRADIO_EMBEDDED
 bool              gFmRadioMode;
 uint8_t           gFmRadioCountdown_500ms;
 volatile uint16_t gFmPlayCountdown_10ms;
@@ -52,7 +53,6 @@ const uint8_t BUTTON_EVENT_HELD = BUTTON_STATE_PRESSED | BUTTON_STATE_HELD;
 const uint8_t BUTTON_EVENT_SHORT =  0;
 const uint8_t BUTTON_EVENT_LONG =  BUTTON_STATE_HELD;
 
-#ifndef ENABLE_FEAT_F4HWN_OVERLAY_APPS
 static void Key_FUNC(KEY_Code_t Key, uint8_t state);
 #endif
 
@@ -95,7 +95,7 @@ int FM_ConfigureChannelState(void)
     return 0;
 }
 
-#ifndef ENABLE_FEAT_F4HWN_OVERLAY_APPS
+#ifdef ENABLE_FMRADIO_EMBEDDED
 void FM_SetFrequency(void)
 {
     BK1080_SetFrequency(gEeprom.FM_FrequencyPlaying, gEeprom.FM_Band/*, gEeprom.FM_Space*/);
@@ -243,7 +243,7 @@ int FM_CheckFrequencyLock(uint16_t Frequency, uint16_t LowerLimit)
     return 0;
 }
 
-#ifndef ENABLE_FEAT_F4HWN_OVERLAY_APPS
+#ifdef ENABLE_FMRADIO_EMBEDDED
 static void Key_DIGITS(KEY_Code_t Key, uint8_t state)
 {
     enum { STATE_FREQ_MODE, STATE_MR_MODE, STATE_SAVE };
@@ -666,31 +666,6 @@ void FM_Start(void)
         SETTINGS_WriteCurrentState();
     #endif
 }
-#else
-/*
- * Broadcast FM is sovereign in Overlay builds: its app owns tuning, scanning,
- * audio and persistence through app_api.  Keep only the shared channel/state
- * loader and FM_CheckFrequencyLock above; these tiny compatibility entry points
- * satisfy generic firmware paths which cannot become active because Overlay
- * builds never set gFmRadioMode or gFM_ScanState.
- */
-void FM_TurnOff(void) {}
-void FM_EraseChannels(void) {}
-void FM_Tune(uint16_t Frequency, int8_t Step, bool bFlag)
-{
-    (void)Frequency;
-    (void)Step;
-    (void)bFlag;
-}
-void FM_PlayAndUpdate(void) {}
-void FM_ProcessKeys(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld)
-{
-    (void)Key;
-    (void)bKeyPressed;
-    (void)bKeyHeld;
-}
-void FM_Play(void) {}
-void FM_Start(void) {}
 #endif
 
 #endif
diff --git a/App/app/fm.h b/App/app/fm.h
index 6a315a30..1578a2e7 100644
--- a/App/app/fm.h
+++ b/App/app/fm.h
@@ -19,9 +19,12 @@
 
 #ifdef ENABLE_FMRADIO
 
-#include "driver/keyboard.h"
 #include "misc.h"
 
+#ifdef ENABLE_FMRADIO_EMBEDDED
+#include "driver/keyboard.h"
+#endif
+
 #define FM_CHANNEL_UP   0x01
 #define FM_CHANNEL_DOWN 0xFF
 
@@ -30,32 +33,34 @@ enum {
 };
 
 extern uint16_t          gFM_Channels[FM_CHANNELS_MAX];
+
+bool    FM_CheckValidChannel(uint8_t Channel);
+// returns first valid channel starting at Channel
+uint8_t FM_FindNextChannel(uint8_t Channel, uint8_t Direction);
+int     FM_ConfigureChannelState(void);
+int     FM_CheckFrequencyLock(uint16_t Frequency, uint16_t LowerLimit);
+
+#ifdef ENABLE_FMRADIO_EMBEDDED
 extern bool              gFmRadioMode;
 extern uint8_t           gFmRadioCountdown_500ms;
 extern volatile uint16_t gFmPlayCountdown_10ms;
 extern volatile int8_t   gFM_ScanState;
 extern bool              gFM_AutoScan;
 extern uint8_t           gFM_ChannelPosition;
-// Doubts about          whether this should be signed or not
-extern uint16_t          gFM_FrequencyDeviation;
 extern bool              gFM_FoundFrequency;
 extern uint16_t          gFM_RestoreCountdown_10ms;
 
-bool    FM_CheckValidChannel(uint8_t Channel);
-// returns first valid channel starting at Channel
-uint8_t FM_FindNextChannel(uint8_t Channel, uint8_t Direction);
-int     FM_ConfigureChannelState(void);
 void    FM_TurnOff(void);
 void    FM_EraseChannels(void);
 
 void    FM_Tune(uint16_t Frequency, int8_t Step, bool bFlag);
 void    FM_PlayAndUpdate(void);
-int     FM_CheckFrequencyLock(uint16_t Frequency, uint16_t LowerLimit);
 
 void    FM_ProcessKeys(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld);
 
 void    FM_Play(void);
 void    FM_Start(void);
+#endif
 
 #endif
 
diff --git a/App/app/generic.c b/App/app/generic.c
index f6c907a2..f9e3ff0f 100644
--- a/App/app/generic.c
+++ b/App/app/generic.c
@@ -20,7 +20,7 @@
 #include "app/chFrScanner.h"
 #include "app/common.h"
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 
@@ -56,7 +56,7 @@ void GENERIC_Key_F(bool bKeyPressed, bool bKeyHeld)
             COMMON_KeypadLockToggle();
         }
         else { // released
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
             if ((gFmRadioMode || gScreenToDisplay != DISPLAY_MAIN) && gScreenToDisplay != DISPLAY_FM)
                 return;
 #else
@@ -77,7 +77,7 @@ void GENERIC_Key_F(bool bKeyPressed, bool bKeyHeld)
         }
     }
     else { // short pressed
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         if (gScreenToDisplay != DISPLAY_FM)
 #endif
         {
@@ -85,7 +85,7 @@ void GENERIC_Key_F(bool bKeyPressed, bool bKeyHeld)
             return;
         }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         if (gFM_ScanState == FM_SCAN_OFF) { // not scanning
             gBeepToPlay = BEEP_1KHZ_60MS_OPTIONAL;
             return;
@@ -132,7 +132,7 @@ void GENERIC_Key_PTT(bool bKeyPressed)
 
 
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFM_ScanState != FM_SCAN_OFF) { // FM radio is scanning .. stop
         FM_PlayAndUpdate();
 #ifdef ENABLE_VOICE
@@ -143,7 +143,7 @@ void GENERIC_Key_PTT(bool bKeyPressed)
     }
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gScreenToDisplay == DISPLAY_FM)
         goto start_tx;  // listening to the FM radio .. start TX'ing
 #endif
@@ -200,7 +200,7 @@ cancel_tx:
 done:
     gPttDebounceCounter = 0;
     if (gScreenToDisplay != DISPLAY_MENU
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         && gRequestDisplayScreen != DISPLAY_FM
 #endif
     ) {
diff --git a/App/app/main.c b/App/app/main.c
index 6b04aba6..29fc3c5d 100644
--- a/App/app/main.c
+++ b/App/app/main.c
@@ -20,7 +20,7 @@
 #include "app/app.h"
 #include "app/chFrScanner.h"
 #include "app/common.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "app/generic.h"
@@ -728,7 +728,7 @@ static void MAIN_Key_EXIT(bool bKeyPressed, bool bKeyHeld)
     }
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (!gFmRadioMode)
 #endif
     {
@@ -763,7 +763,7 @@ static void MAIN_Key_EXIT(bool bKeyPressed, bool bKeyHeld)
         return;
     }
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     ACTION_FM();
 #endif
     return;
@@ -1064,7 +1064,7 @@ static void MAIN_Key_UP_DOWN(bool bKeyPressed, bool bKeyHeld, int8_t Direction)
 
 void MAIN_ProcessKeys(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld)
 {
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode && Key != KEY_PTT && Key != KEY_EXIT) {
         if (!bKeyHeld && bKeyPressed)
             gBeepToPlay = BEEP_500HZ_60MS_DOUBLE_BEEP_OPTIONAL;
diff --git a/App/app/uart.c b/App/app/uart.c
index 779feafd..05913893 100644
--- a/App/app/uart.c
+++ b/App/app/uart.c
@@ -20,7 +20,7 @@
 #if !defined(ENABLE_OVERLAY)
     #include "py32f0xx.h"
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "app/uart.h"
@@ -360,7 +360,7 @@ static void CMD_0514(uint32_t Port, const uint8_t *pBuffer)
     }
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     gFmRadioCountdown_500ms = fm_radio_countdown_500ms;
 #endif
 
@@ -404,7 +404,7 @@ static void CMD_051B(uint32_t Port, const uint8_t *pBuffer)
 
     gSerialConfigCountDown_500ms = 12; // 6 sec
 
-    #ifdef ENABLE_FMRADIO
+    #ifdef ENABLE_FMRADIO_EMBEDDED
         gFmRadioCountdown_500ms = fm_radio_countdown_500ms;
     #endif
 
@@ -467,7 +467,7 @@ static void CMD_051D(uint32_t Port, const uint8_t *pBuffer)
     
     bReloadEeprom = false;
 
-    #ifdef ENABLE_FMRADIO
+    #ifdef ENABLE_FMRADIO_EMBEDDED
         gFmRadioCountdown_500ms = fm_radio_countdown_500ms;
     #endif
 
@@ -537,7 +537,7 @@ static void CMD_052D(uint32_t Port, const uint8_t *pBuffer)
     REPLY_052D_t      Reply;
     bool              bIsLocked;
 
-    #ifdef ENABLE_FMRADIO
+    #ifdef ENABLE_FMRADIO_EMBEDDED
         gFmRadioCountdown_500ms = fm_radio_countdown_500ms;
     #endif
     Reply.Header.ID   = 0x052E;
diff --git a/App/audio.c b/App/audio.c
index 42308e96..12407f7e 100644
--- a/App/audio.c
+++ b/App/audio.c
@@ -15,11 +15,11 @@
  *     limitations under the License.
  */
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "audio.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "driver/bk1080.h"
 #endif
 #include "driver/bk4819.h"
@@ -70,7 +70,7 @@ void AUDIO_PlayBeep(BEEP_Type_t Beep)
     if (Beep >= ARRAY_SIZE(BEEP_Classic_array))
         return;
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFmRadioMode)
         BK1080_Mute(true);
 #endif
@@ -112,7 +112,7 @@ void AUDIO_PlayBeep(BEEP_Type_t Beep)
     SYSTEM_DelayMs(5);
     BK4819_WriteRegister(BK4819_REG_71, ToneConfig);
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     const bool isFmRadio = gFmRadioMode;
     
     if (isFmRadio)
@@ -122,7 +122,7 @@ void AUDIO_PlayBeep(BEEP_Type_t Beep)
     if (gEnableSpeaker)
         AUDIO_AudioPathOn();
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (isFmRadio)
         BK1080_Mute(false);
 #endif
@@ -275,7 +275,7 @@ void AUDIO_PlaySingleVoice(bool bFlag)
         if (FUNCTION_IsRx())   // 1of11
             BK4819_SetAF(BK4819_AF_MUTE);
 
-        #ifdef ENABLE_FMRADIO
+        #ifdef ENABLE_FMRADIO_EMBEDDED
             if (gFmRadioMode)
                 BK1080_Mute(true);
         #endif
@@ -299,7 +299,7 @@ void AUDIO_PlaySingleVoice(bool bFlag)
             if (FUNCTION_IsRx())    // 1of11
                 RADIO_SetModulation(gRxVfo->Modulation);
 
-            #ifdef ENABLE_FMRADIO
+            #ifdef ENABLE_FMRADIO_EMBEDDED
                 if (gFmRadioMode)
                     BK1080_Mute(false);
             #endif
@@ -440,7 +440,7 @@ void AUDIO_PlayQueuedVoice(void)
         RADIO_SetModulation(gRxVfo->Modulation); // 1of11
     }
 
-    #ifdef ENABLE_FMRADIO
+    #ifdef ENABLE_FMRADIO_EMBEDDED
         if (gFmRadioMode)
             BK1080_Mute(false);
     #endif
diff --git a/App/functions.c b/App/functions.c
index c416ff15..68a2bbc0 100644
--- a/App/functions.c
+++ b/App/functions.c
@@ -17,13 +17,13 @@
 #include <string.h>
 
 #include "app/dtmf.h"
-#if defined(ENABLE_FMRADIO)
+#if defined(ENABLE_FMRADIO_EMBEDDED)
     #include "app/fm.h"
 #endif
 #include "audio.h"
 #include "dcs.h"
 #include "driver/backlight.h"
-#if defined(ENABLE_FMRADIO)
+#if defined(ENABLE_FMRADIO_EMBEDDED)
     #include "driver/bk1080.h"
 #endif
 #include "driver/bk4819.h"
@@ -103,7 +103,7 @@ void FUNCTION_Foreground(const FUNCTION_Type_t PreviousFunction)
         return;
     }
 
-#if defined(ENABLE_FMRADIO)
+#if defined(ENABLE_FMRADIO_EMBEDDED)
     if (gFmRadioMode)
         gFM_RestoreCountdown_10ms = fm_restore_countdown_10ms;
 #endif
@@ -156,7 +156,7 @@ void FUNCTION_Transmit()
     gDTMF_RX_live_timeout = 0;
     DTMF_clear_input_box_memory();
 
-#if defined(ENABLE_FMRADIO)
+#if defined(ENABLE_FMRADIO_EMBEDDED)
     if (gFmRadioMode)
         BK1080_Init0();
 #endif
@@ -284,7 +284,7 @@ void FUNCTION_Select(FUNCTION_Type_t Function)
     gBatterySaveCountdown_10ms = battery_save_count_10ms;
     gSchedulePowerSave         = false;
 
-#if defined(ENABLE_FMRADIO)
+#if defined(ENABLE_FMRADIO_EMBEDDED)
     if(Function != FUNCTION_INCOMING)
         gFM_RestoreCountdown_10ms = 0;
 #endif
diff --git a/App/misc.c b/App/misc.c
index 8c5292ad..e1b8987e 100644
--- a/App/misc.c
+++ b/App/misc.c
@@ -251,7 +251,7 @@ bool              gFlagResetVfos;
 bool              gRequestSaveVFO;
 uint16_t          gRequestSaveChannel;
 bool              gRequestSaveSettings;
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     bool          gRequestSaveFM;
 #endif
 bool              gFlagPrepareTX;
@@ -259,7 +259,7 @@ bool              gFlagPrepareTX;
 bool              gFlagAcceptSetting;
 bool              gFlagRefreshSetting;
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     bool          gFlagSaveFM;
 #endif
 bool              g_CDCSS_Lost;
@@ -312,7 +312,7 @@ volatile bool     gNextTimeslice40ms;
     volatile bool     gScheduleNOAA       = true;
 #endif
 volatile bool     gFlagTailNoteEliminationComplete;
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     volatile bool gScheduleFM;
 #endif
 
diff --git a/App/misc.h b/App/misc.h
index 8457a621..dd5d6e3a 100644
--- a/App/misc.h
+++ b/App/misc.h
@@ -389,7 +389,7 @@ extern bool                  gFlagResetVfos;
 extern bool                  gRequestSaveVFO;
 extern uint16_t              gRequestSaveChannel;
 extern bool                  gRequestSaveSettings;
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     extern bool              gRequestSaveFM;
 #endif
 extern uint8_t               gKeypadLocked;
@@ -398,7 +398,7 @@ extern bool                  gFlagPrepareTX;
 extern bool                  gFlagAcceptSetting;   // accept menu setting
 extern bool                  gFlagRefreshSetting;  // refresh menu display
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     extern bool              gFlagSaveFM;
 #endif
 extern bool                  g_CDCSS_Lost;
@@ -437,7 +437,7 @@ extern uint8_t               gFSKWriteIndex;
 extern volatile bool         gNextTimeslice;
 extern bool                  gUpdateDisplay;
 extern bool                  gF_LOCK;
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     extern uint8_t           gFM_ChannelPosition;
 #endif
 extern uint8_t               gShowChPrefix;
@@ -453,7 +453,7 @@ extern volatile bool         gNextTimeslice40ms;
 #endif
 extern volatile bool         gFlagTailNoteEliminationComplete;
 extern volatile uint8_t      gVFOStateResumeCountdown_500ms;
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     extern volatile bool     gScheduleFM;
 #endif
 extern uint8_t               gIsLocked;
diff --git a/App/radio.c b/App/radio.c
index 69cc6bf7..fb84c2d9 100644
--- a/App/radio.c
+++ b/App/radio.c
@@ -21,7 +21,7 @@
 #ifdef ENABLE_FEAT_F4HWN_RXTX_LOG
     #include "app/rxtx_log.h"
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "audio.h"
@@ -887,7 +887,7 @@ void RADIO_SetupRegisters(bool switchToForeground)
 #ifdef ENABLE_NOAA
         && !IS_NOAA_CHANNEL(gCurrentVfo->CHANNEL_SAVE)
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
         && !gFmRadioMode
 #endif
     ){
diff --git a/App/scheduler.c b/App/scheduler.c
index 0d2031a1..3401e5ad 100644
--- a/App/scheduler.c
+++ b/App/scheduler.c
@@ -16,7 +16,7 @@
 
 #include "scheduler.h"
 #include "app/chFrScanner.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "app/scanner.h"
@@ -136,7 +136,7 @@ void SysTick_Handler(void)
     DECREMENT_AND_TRIGGER(gCountdownToPlayNextVoice_10ms, gFlagPlayQueuedVoice);
 #endif
 
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     if (gFM_ScanState != FM_SCAN_OFF && gCurrentFunction != FUNCTION_MONITOR)
         if (gCurrentFunction != FUNCTION_TRANSMIT && gCurrentFunction != FUNCTION_RECEIVE)
             DECREMENT_AND_TRIGGER(gFmPlayCountdown_10ms, gScheduleFM);
diff --git a/App/ui/status.c b/App/ui/status.c
index fe24697b..789deee3 100644
--- a/App/ui/status.c
+++ b/App/ui/status.c
@@ -21,7 +21,7 @@
 #ifdef ENABLE_FEAT_F4HWN_RXTX_LOG
 #include "app/rxtx_log.h"
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "app/scanner.h"
diff --git a/App/ui/ui.c b/App/ui/ui.c
index 8a5aca29..b509d2ec 100644
--- a/App/ui/ui.c
+++ b/App/ui/ui.c
@@ -19,7 +19,7 @@
 
 #include "app/chFrScanner.h"
 #include "app/dtmf.h"
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "app/fm.h"
 #endif
 #include "driver/keyboard.h"
@@ -27,7 +27,7 @@
 #ifdef ENABLE_AIRCOPY
     #include "ui/aircopy.h"
 #endif
-#ifdef ENABLE_FMRADIO
+#ifdef ENABLE_FMRADIO_EMBEDDED
     #include "ui/fmradio.h"
 #endif
 #ifdef ENABLE_FEAT_F4HWN_RXTX_LOG
@@ -53,7 +53,7 @@ void (*const UI_DisplayFunctions[])(void) = {
     [DISPLAY_MENU] = &UI_DisplayMenu,
     [DISPLAY_SCANNER] = &UI_DisplayScanner,
 
-#if defined(ENABLE_FMRADIO) && !defined(ENABLE_FEAT_F4HWN_OVERLAY_APPS)
+#ifdef ENABLE_FMRADIO_EMBEDDED
     [DISPLAY_FM] = &UI_DisplayFM,
 #elif defined(ENABLE_FMRADIO)
     /* The FM overlay app replaces the resident FM screen (ui/fmradio.c is not
@@ -94,7 +94,7 @@ void GUI_SelectNextDisplay(GUI_DisplayType_t Display)
         gIsInSubMenu         = false;
         gCssBackgroundScan   = false;
         gScanStateDir        = SCAN_OFF;
-        #ifdef ENABLE_FMRADIO
+        #ifdef ENABLE_FMRADIO_EMBEDDED
             gFM_ScanState    = FM_SCAN_OFF;
         #endif
         gAskForConfirmation  = 0;