Hello @Tajwar.Chandel (Community Member)
Could you be more precise in your statements?
The board is not reset after pressing B2 button (RESET IO of STM32U585) what do you observe?
Does your firmware in flash memory doesn't start or not start ?
Are you in debug mode thru STM32CubeIDE ?
You're expected that the board should disconnect after pressing button, why ?
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