diff --git a/radio/src/io/frsky_firmware_update.cpp b/radio/src/io/frsky_firmware_update.cpp
index fd3f7fe3c..c3012b862 100644
--- a/radio/src/io/frsky_firmware_update.cpp
+++ b/radio/src/io/frsky_firmware_update.cpp
@@ -355,7 +355,7 @@ const char * FrskyDeviceFirmwareUpdate::endTransfer()
   return nullptr;
 }
 
-void FrskyDeviceFirmwareUpdate::flashFirmware(const char * filename)
+const char * FrskyDeviceFirmwareUpdate::flashFirmware(const char * filename)
 {
   pausePulses();
 
@@ -416,6 +416,8 @@ void FrskyDeviceFirmwareUpdate::flashFirmware(const char * filename)
 
   state = SPORT_IDLE;
   resumePulses();
+
+  return result;
 }
 
 #define CHIP_FIRMWARE_UPDATE_TIMEOUT  20000 /* 20s */
@@ -452,8 +454,6 @@ const char * FrskyChipFirmwareUpdate::waitAnswer(uint8_t & status)
 
 const char * FrskyChipFirmwareUpdate::startBootloader()
 {
-  telemetryPortSetDirectionOutput();
-
   sportSendByte(0x01);
 
   for (uint8_t i = 0; i < 30; i++)
@@ -489,8 +489,6 @@ void FrskyChipFirmwareUpdate::sendByte(uint8_t byte, bool crcFlag)
 
 const char * FrskyChipFirmwareUpdate::sendUpgradeCommand(char command, uint32_t packetsCount)
 {
-  telemetryPortSetDirectionOutput();
-
   crc = 0;
 
   // Head
@@ -532,8 +530,6 @@ const char * FrskyChipFirmwareUpdate::sendUpgradeCommand(char command, uint32_t
 
 const char * FrskyChipFirmwareUpdate::sendUpgradeData(uint32_t index, uint8_t * data)
 {
-  telemetryPortSetDirectionOutput();
-
   crc = 0;
 
   // Head
@@ -620,7 +616,7 @@ const char * FrskyChipFirmwareUpdate::doFlashFirmware(const char * filename)
   return sendUpgradeCommand('E', packetsCount);
 }
 
-void FrskyChipFirmwareUpdate::flashFirmware(const char * filename)
+const char * FrskyChipFirmwareUpdate::flashFirmware(const char * filename, bool wait)
 {
   drawProgressScreen(getBasename(filename), STR_DEVICE_RESET, 0, 0);
 
@@ -636,9 +632,11 @@ void FrskyChipFirmwareUpdate::flashFirmware(const char * filename)
 
   SPORT_UPDATE_POWER_OFF();
 
-  /* wait 2s off */
-  watchdogSuspend(2000);
-  RTOS_WAIT_MS(2000);
+  if (wait) {
+    /* wait 2s off */
+    watchdogSuspend(2000);
+    RTOS_WAIT_MS(2000);
+  }
 
   telemetryInit(PROTOCOL_TELEMETRY_FRSKY_SPORT);
 
@@ -655,13 +653,6 @@ void FrskyChipFirmwareUpdate::flashFirmware(const char * filename)
     POPUP_INFORMATION(STR_FIRMWARE_UPDATE_SUCCESS);
   }
 
-#if defined(HARDWARE_INTERNAL_MODULE)
-  INTERNAL_MODULE_OFF();
-#endif
-
-  EXTERNAL_MODULE_OFF();
-  SPORT_UPDATE_POWER_OFF();
-
   /* wait 2s off */
   watchdogSuspend(2000);
   RTOS_WAIT_MS(2000);
@@ -679,4 +670,6 @@ void FrskyChipFirmwareUpdate::flashFirmware(const char * filename)
   }
 
   resumePulses();
+
+  return result;
 }
diff --git a/radio/src/io/frsky_firmware_update.h b/radio/src/io/frsky_firmware_update.h
index f0724a6db..dea3adb33 100644
--- a/radio/src/io/frsky_firmware_update.h
+++ b/radio/src/io/frsky_firmware_update.h
@@ -22,6 +22,7 @@
 #define _FRSKY_FIRMWARE_UPDATE_H_
 
 #include "dataconstants.h"
+#include "definitions.h"
 #include "frsky_pxx2.h"
 
 enum FrskyFirmwareProductFamily {
@@ -65,7 +66,7 @@ class FrskyDeviceFirmwareUpdate {
       module(module) {
     }
 
-    void flashFirmware(const char * filename);
+    const char * flashFirmware(const char * filename);
 
   protected:
     uint8_t state = SPORT_IDLE;
@@ -96,7 +97,7 @@ class FrskyChipFirmwareUpdate {
     {
     }
 
-    void flashFirmware(const char * filename);
+    const char * flashFirmware(const char * filename, bool wait = true);
 
   protected:
     uint8_t crc;
diff --git a/radio/src/opentx.cpp b/radio/src/opentx.cpp
index d43959145..c635c147e 100644
--- a/radio/src/opentx.cpp
+++ b/radio/src/opentx.cpp
@@ -18,6 +18,7 @@
  * GNU General Public License for more details.
  */
 
+#include <io/frsky_firmware_update.h>
 #include "opentx.h"
 
 RadioData  g_eeGeneral;
@@ -1753,10 +1754,19 @@ void opentxInit()
     unexpectedShutdown = 1;
   }
 
-#if defined(SDCARD) && !defined(PCBMEGA2560)
+#if defined(SDCARD)
   // SDCARD related stuff, only done if not unexpectedShutdown
   if (!unexpectedShutdown) {
     sdInit();
+
+#if defined(AUTOUPDATE)
+    if (f_stat(AUTOUPDATE_FILENAME, nullptr) == FR_OK) {
+      FrskyChipFirmwareUpdate device;
+      if (device.flashFirmware(AUTOUPDATE_FILENAME, false) == nullptr)
+        f_unlink(AUTOUPDATE_FILENAME);
+    }
+#endif
+
     logsInit();
   }
 #endif
diff --git a/radio/src/sdcard.h b/radio/src/sdcard.h
index 5f39d936a..2b86198a4 100644
--- a/radio/src/sdcard.h
+++ b/radio/src/sdcard.h
@@ -37,6 +37,7 @@
 #define SYSTEM_SUBDIR       "SYSTEM"
 #define BITMAPS_PATH        ROOT_PATH "IMAGES"
 #define FIRMWARES_PATH      ROOT_PATH "FIRMWARE"
+#define AUTOUPDATE_FILENAME FIRMWARES_PATH "/autoupdate.frsk"
 #define EEPROMS_PATH        ROOT_PATH "EEPROM"
 #define SCRIPTS_PATH        ROOT_PATH "SCRIPTS"
 #define WIZARD_PATH         SCRIPTS_PATH "/WIZARD"
diff --git a/radio/src/targets/horus/telemetry_driver.cpp b/radio/src/targets/horus/telemetry_driver.cpp
index 6d9276ef1..8b782f759 100644
--- a/radio/src/targets/horus/telemetry_driver.cpp
+++ b/radio/src/targets/horus/telemetry_driver.cpp
@@ -140,10 +140,40 @@ void telemetryPortSetDirectionInput()
 
 void sportSendByte(uint8_t byte)
 {
+  telemetryPortSetDirectionOutput();
+
   while (!(TELEMETRY_USART->SR & USART_SR_TXE));
   USART_SendData(TELEMETRY_USART, byte);
 }
 
+void sportSendByteLoop(uint8_t byte)
+{
+  telemetryPortSetDirectionOutput();
+
+  outputTelemetryBuffer.data[0] = byte;
+
+  DMA_InitTypeDef DMA_InitStructure;
+  DMA_DeInit(TELEMETRY_DMA_Stream_TX);
+  DMA_InitStructure.DMA_Channel = TELEMETRY_DMA_Channel_TX;
+  DMA_InitStructure.DMA_PeripheralBaseAddr = CONVERT_PTR_UINT(&TELEMETRY_USART->DR);
+  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
+  DMA_InitStructure.DMA_Memory0BaseAddr = CONVERT_PTR_UINT(outputTelemetryBuffer.data);
+  DMA_InitStructure.DMA_BufferSize = 1;
+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
+  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
+  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
+  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
+  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
+  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
+  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
+  DMA_Init(TELEMETRY_DMA_Stream_TX, &DMA_InitStructure);
+  DMA_Cmd(TELEMETRY_DMA_Stream_TX, ENABLE);
+  USART_DMACmd(TELEMETRY_USART, USART_DMAReq_Tx, ENABLE);
+}
+
 void sportSendBuffer(const uint8_t * buffer, uint32_t count)
 {
   telemetryPortSetDirectionOutput();
diff --git a/radio/src/targets/taranis/CMakeLists.txt b/radio/src/targets/taranis/CMakeLists.txt
index aabd04a3c..2be5745fb 100644
--- a/radio/src/targets/taranis/CMakeLists.txt
+++ b/radio/src/targets/taranis/CMakeLists.txt
@@ -4,6 +4,7 @@ option(INTERNAL_MODULE_PPM "Support for PPM internal module hack" OFF)
 option(INTERNAL_MODULE_PXX1 "Support for PXX1 internal module replacement" OFF)
 option(PXX1 "PXX1 protocol support" ON)
 option(PXX2 "PXX2 protocol support" OFF)
+option(AUTOUPDATE "Auto update internal chips from SD" OFF)
 
 if(PCB STREQUAL X9E)
   set(PWR_BUTTON "PRESS" CACHE STRING "Pwr button type (PRESS/SWITCH)")
@@ -204,6 +205,10 @@ if(PCB STREQUAL X9E OR PCB STREQUAL X7 OR PCB STREQUAL XLITE OR PCB STREQUAL XLI
     )
 endif()
 
+if(AUTOUPDATE)
+  add_definitions(-DAUTOUPDATE)
+endif()
+
 set(HSE_VALUE 12000000)
 set(SDCARD YES)
 set(EEPROM EEPROM_RLC)
diff --git a/radio/src/targets/taranis/board.cpp b/radio/src/targets/taranis/board.cpp
index cd7cfec62..d6f949a50 100644
--- a/radio/src/targets/taranis/board.cpp
+++ b/radio/src/targets/taranis/board.cpp
@@ -137,6 +137,11 @@ void boardInit()
 
   pwrInit();
 
+#if defined(AUTOUPDATE)
+  telemetryPortInit(FRSKY_SPORT_BAUDRATE, TELEMETRY_SERIAL_WITHOUT_DMA);
+  sportSendByteLoop(0x7E);
+#endif
+
 #if defined(STATUS_LEDS)
   ledInit();
   ledGreen();
diff --git a/radio/src/targets/taranis/board.h b/radio/src/targets/taranis/board.h
index 97dfe397e..e5ea488be 100644
--- a/radio/src/targets/taranis/board.h
+++ b/radio/src/targets/taranis/board.h
@@ -704,6 +704,7 @@ void telemetryPortInit(uint32_t baudrate, uint8_t mode);
 void telemetryPortSetDirectionInput(void);
 void telemetryPortSetDirectionOutput(void);
 void sportSendByte(uint8_t byte);
+void sportSendByteLoop(uint8_t byte);
 void sportSendBuffer(const uint8_t * buffer, uint32_t count);
 uint8_t telemetryGetByte(uint8_t * byte);
 void telemetryClearFifo();
diff --git a/radio/src/targets/taranis/telemetry_driver.cpp b/radio/src/targets/taranis/telemetry_driver.cpp
index dc82fcd81..f46331bc0 100644
--- a/radio/src/targets/taranis/telemetry_driver.cpp
+++ b/radio/src/targets/taranis/telemetry_driver.cpp
@@ -97,10 +97,40 @@ void telemetryPortSetDirectionInput()
 
 void sportSendByte(uint8_t byte)
 {
+  telemetryPortSetDirectionOutput();
+
   while (!(TELEMETRY_USART->SR & USART_SR_TXE));
   USART_SendData(TELEMETRY_USART, byte);
 }
 
+void sportSendByteLoop(uint8_t byte)
+{
+  telemetryPortSetDirectionOutput();
+
+  outputTelemetryBuffer.data[0] = byte;
+
+  DMA_InitTypeDef DMA_InitStructure;
+  DMA_DeInit(TELEMETRY_DMA_Stream_TX);
+  DMA_InitStructure.DMA_Channel = TELEMETRY_DMA_Channel_TX;
+  DMA_InitStructure.DMA_PeripheralBaseAddr = CONVERT_PTR_UINT(&TELEMETRY_USART->DR);
+  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
+  DMA_InitStructure.DMA_Memory0BaseAddr = CONVERT_PTR_UINT(outputTelemetryBuffer.data);
+  DMA_InitStructure.DMA_BufferSize = 1;
+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
+  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
+  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
+  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
+  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
+  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
+  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
+  DMA_Init(TELEMETRY_DMA_Stream_TX, &DMA_InitStructure);
+  DMA_Cmd(TELEMETRY_DMA_Stream_TX, ENABLE);
+  USART_DMACmd(TELEMETRY_USART, USART_DMAReq_Tx, ENABLE);
+}
+
 void sportSendBuffer(const uint8_t * buffer, uint32_t count)
 {
   telemetryPortSetDirectionOutput();
diff --git a/tools/build-frsky.py b/tools/build-frsky.py
index 8a6078adf..7d1efd68f 100755
--- a/tools/build-frsky.py
+++ b/tools/build-frsky.py
@@ -12,6 +12,7 @@ options = {
     "XLITES": {
         "LUA": "NO_MODEL_SCRIPTS",
         "GVARS": "YES",
+        "AUTOUPDATE": "YES",
         "PXX1": "YES",
         "XJT": "NO",
         "R9M_SIZE_STD": "NO",
@@ -23,6 +24,7 @@ options = {
     "X9LITE": {
         "LUA": "NO_MODEL_SCRIPTS",
         "GVARS": "YES",
+        "AUTOUPDATE": "YES",
         "PXX1": "YES",
         "XJT": "NO",
         "R9M_SIZE_STD": "NO",