diff --git a/radio/src/opentx.cpp b/radio/src/opentx.cpp
index 42e175976..546585f04 100644
--- a/radio/src/opentx.cpp
+++ b/radio/src/opentx.cpp
@@ -303,23 +303,6 @@ void watchdogSetTimeout(uint32_t timeout)
 {
   watchdogTimeout = timeout;
 }
-
-#if 0
-// TODO remove definitely?
-void opentxBootloader()
-{
-  BACKLIGHT_ON();
-
-  lcd_clear();
-  lcd_putcAtt( 48, 24, 'U', DBLSIZE ) ;
-  lcd_putcAtt( 60, 24, 'S', DBLSIZE ) ;
-  lcd_putcAtt( 72, 24, 'B', DBLSIZE ) ;
-  lcdRefresh() ;
-
-  usbBootloader();
-}
-#endif
-
 #endif
 
 void per10ms()
@@ -5678,27 +5661,6 @@ int main(void)
   opentxInit(mcusr);
 #endif
 
-#if 0
-  // TODO remove definitely?
-  if (BOOTLOADER_REQUEST()) {
-    pwrOff(); // Only turn power off if necessary
-
-#if defined(HAPTIC)
-    hapticOff();
-#endif
-
-    g_eeGeneral.optrexDisplay = 1;
-    lcd_clear();
-    lcdRefresh();
-
-    g_eeGeneral.optrexDisplay = 0;
-    g_eeGeneral.backlightBright = 0;
-    g_eeGeneral.contrast = 25;
-
-    opentxBootloader();
-  }
-#endif
-
 #if defined(CPUARM)
   CoInitOS();
 
diff --git a/radio/src/targets/sky9x/board_sky9x.h b/radio/src/targets/sky9x/board_sky9x.h
index 386b73905..3d78a920c 100644
--- a/radio/src/targets/sky9x/board_sky9x.h
+++ b/radio/src/targets/sky9x/board_sky9x.h
@@ -165,12 +165,6 @@ extern uint32_t Current_used;
 extern uint16_t sessionTimer;
 #endif
 
-#if defined(REVC)
-#define BOOTLOADER_REQUEST() (usbPlugged())
-#else
-#define BOOTLOADER_REQUEST() (pwrCheck() == e_power_usb)
-#endif
-
 #define SLAVE_MODE() (pwrCheck() == e_power_trainer)
 #define JACK_PPM_OUT() PIOC->PIO_PDR = PIO_PC22
 #define JACK_PPM_IN() PIOC->PIO_PER = PIO_PC22
@@ -204,7 +198,6 @@ void disable_ssc();
 #define init_dsm2(port) init_main_ppm(5000, 0); init_ssc()
 #define disable_dsm2(port) disable_ssc()
 
-
 // SD driver
 #if defined(SIMU)
   #define sdInit()
@@ -291,4 +284,8 @@ void rotencEnd();
 // Debug driver
 void debugPutc(const char c);
 
+// Telemetry driver
+void UART2_Configure(uint32_t baudrate, uint32_t masterClock);
+void startPdcUsartReceive();
+
 #endif
diff --git a/radio/src/targets/taranis/board_taranis.h b/radio/src/targets/taranis/board_taranis.h
index 5fd7d7bd6..3f071e8c3 100644
--- a/radio/src/targets/taranis/board_taranis.h
+++ b/radio/src/targets/taranis/board_taranis.h
@@ -224,8 +224,6 @@ void turnBacklightOff(void);
 #endif
 
 // USB driver
-#define BOOTLOADER_REQUEST()  (0)
-#define usbBootloader()
 int usbPlugged(void);
 void usbInit(void);
 void usbStart(void);