STM32U5 board can't connect to cubeprogrammer

[Istillaga]

Hello,

I had two STM32 boards connected to the PC, and I ran the regression.sh program from SBSFU to configure one of them. However, the second board, which also had the SBSFU application installed, was configured as well. Now, the second board cannot connect to STM32CubeProgrammer. If you press the reset button, it connects momentarily, but once you release it, the connection is lost. Any help to revive the board?

when the reset is not pressed

and when reset is pressed

[Imen.D]

Hello @Istillaga ,

Try to "Connect under reset" or "Power Down" mode.

Check BOOT0 jumper and the LDO/SMPS settings. This application may help you: AN5373 Getting started with STM32U5 MCU hardware development.

You can refer to this FAQ: How can I connect to my STM32 board using STM32CubeProgrammer?

[Istillaga]

Hello @Imen.D,

I am getting the next result:
Error: There is only 1 probe(s) detected. Wrong parameter: index=1