Dear STMicroelectronics Community,
I am experiencing a critical issue with my NUCLEO-144 STM32N657X0 EVAL BRD following an attempted ST-LINK firmware upgrade.
During the ST-LINK upgrade process (via STM32CubeProgrammer), the upgrade became stuck and did not complete successfully. After this, the board became non-operational.
Current behavior:
The board is no longer accessible via ST-LINK (SWD).
Flashing is not possible using STM32CubeProgrammer (ST-LINK connection fails).
The target MCU cannot be detected or programmed.
Powering the board via the on-board USB still works, but no flashing/debugging is possible.
The ST-LINK interface appears unresponsive / corrupted.
Actions already attempted:
Power cycling the board
Trying different USB cables and ports
Using STM32CubeProgrammer CLI and GUI
Attempting connection with different reset modes (UR / HWrst / HotPlug)
Verifying BOOT0/BOOT1 configurations
Using macOS (USB device intermittently detected)
It appears the ST-LINK firmware may be corrupted due to the interrupted upgrade process, and I am unable to recover the board using standard tools.
Could you please advise on:
Whether ST-LINK recovery is possible in this state
Any forced recovery or DFU procedure for ST-LINK V3
Whether this condition requires board replacement (RMA)
Board details:
Thank you for your support. I would appreciate guidance on how to recover the board, as it is currently unusable for development.
Kind regards,
Mahmoud Abdelgyd
