nucleo stm32h755 has a faulty stlink charging circuit

[Ruồi]

I accidentally disabled the 3v3 pin on CN8, so now my Nucleo h755 board can no longer load the code.

In this case is there a way to save?
Thanks,

[AScha.3]

What you "disabled " on pin header ?

+

For flash the code, st-link is connected on CN1 , and powers also the H755 .

So check JP2 :

 

[Ruồi]

I connected pin 3v3 on CN8 to pin GND.\

STLINK is still alive but STM32H755 can no longer be seen.