Hello everybody, i have a discovery board STM32F407VG. i worked with it quite well. but wenn i connect the board i get message The interface firmware FAILED to reset/halt the target MCU

[Vangelis Fortounas]

Hello

In STLink settings , try to "connect under reset" and use "Hardware Reset" as reset option.

Update also the STLink firmware to the latest version

[Tesla DeLorean]

Figure you have reconfigured PA13 PA14 or gone to sleep.

Try erasing using other tools or strap BOOT0 to VDD so it doesn't run your code. ​