STM32H745XI Disco board damaged - how to recover?

[Krautermann]

The SPI2_MISO pin (PI2) at the arduino connector of the STM32H745XI board was accidentally connected to the MOSI of another SPI device giving around 5V and now the board red LED (LD3) keeps being on...According to the user manual, this means STLK Over Current. 

In the FAIL.TXT file: The interface firmware FAILED to reset/halt the target MCU

Is there a way to fix that?

I am afraid that the Core is permanently damaged??

[ONadr.1 · Accepted solution]

In that case, the only option is to replace the MCU on the board. The MCU is burnt out.

[Nsg1987]

@Krautermann 

Try to recover the board with STM32CubeProgrammer. Do chip erase. 

If it doesn't work then connect BOOT0 pin to 3.3 V, connect board to STM32CubeProgrammer and perform chip erase.