STM32G031 issue when using CubeProgrammer with UART bootloader

[Pinglei]

STM32G031Y8Y6TR is now burning some problems would like to consult

Serial port 1 after burning OK, when burning again can not read the MCU situation, help to see what will be the reason, how to solve, thanks a lot.

[TDK]

Are you holding BOOT0 high during reset so it enters the bootloader?

Is ground connected between board and UART module?

[Pinglei]

There is ground between the board and the UART module, and the BOOT0 remains at a high level of 5V

[Pinglei]

Please look again ,thanks a lot.

[Tesla DeLorean]

5V ??

Perhaps instead of kicking the thread you make your presentation of the issue more clear and compelling?

[EniRot99]

Hey check this out: jonahswain/stm32g0-bootloader: STM32G0 microcontroller bootloader