diff --git a/docs/Flash_from_Tx.md b/docs/Flash_from_Tx.md
index cb3f0cb..fc25875 100644
--- a/docs/Flash_from_Tx.md
+++ b/docs/Flash_from_Tx.md
@@ -54,6 +54,8 @@ For radios running ersky9x and OpenTX, there is an option to flash a precompiled
 1. Long press again to flash the selected file to the module
 1. When flashing has finished, long press EXIT to reboot in normal mode
 
-###Troubleshooting
+### Troubleshooting
 1. If the flashing procedure fails try to redo the process with `Invert Com Port` enabled
-2. Make sure to flash the latest bootloader on the MPM module before attempting a Flash from the TX
+1. Make sure to flash the latest bootloader on the MPM module before attempting a Flash from the TX
+   1. For an Atmega328p module use the bootloader coming with the Multi 4-in1 AVR board 1.0.3 or later 
+   1. For a STM32 module use the bootloader coming with the Multi 4-in1 STM32 board 1.0.9 or later