Unable to Connect to NUCLEO-STM32H7S3L8 in STM32CubeProgrammer or STM32CubeIDE

[AlexShao]

Hello all, 

I am working with a NUCLEO-STM32H7S3L8 board, but I am unable to connect to it using STM32CubeProgrammer or flash firmware using STM32CubeIDE. However, I am still able to update the board’s firmware successfully.

Possible Cause:

I suspect that I might have pressed the reset button while flashing firmware to the device, which could have caused the issue.

Issue:

• Unable to connect to the board via STM32CubeProgrammer
• Unable to flash firmware in STM32CubeIDE
• I cannot perform a hard reset because it requires a connection in STM32CubeProgrammer

Question:

What steps can I take to recover my board and regain access?

Any help or suggestions would be greatly appreciated.

Thank you!!

[KDJEM.1 · Accepted solution]

Hello @AlexShao and welcome to the community,

Which error did you get?

Could you please

• Refer and follow the steps shared in this FAQ: How can I recover my STM32H7 board after facing a power configuration deadlock?
• Try to upgrade Firmware using STM32CubeProgrammer and erase external memory.

I hope this help you!

Please let me know if the issue is solved or not?

Thank you.

Kaouthar

[AlexShao]

Dearest Kaouthar,

The solution you shared solved the problem. The board is functional again.  

I was getting the error "Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication."

Thank you so much!!

Alex