How to flash a common bootloader on NUCLEO-G071RB

[Aiswarya1]

Hi,

I am using a NUCLEO-G071RB development board. I accidentally erased the original bootloader while flashing a custom one. Is it possible to reflash or restore the built-in bootloader on the NUCLEO-G071RB development board? If so, where can I obtain the original bootloader file?

Thanks,

Aiswarya

[Peter BENSCH · Accepted solution]

Welcome @Aiswarya1, to the community!

It is impossible to erase the original bootloader – at least the one that was permanently stored by STMicroelectronics in the bootloader area. You can only erase a bootloader that you programmed yourself, which you may have programmed in the user flash.

Please describe what led you to believe that the original bootloader had been deleted?

Regards
/Peter

[Aiswarya1]

Thank you for your response.

I have uploaded the AM32 bootloader to the NUCLEO-G071RB development board. I believe the original bootloader was erased when I flashed the AM32 bootloader. Could you please let me know how to erase the custom bootloader that I programmed myself? If I select FULL CHIP ERASE, will it erase the entire bootloader as well?

Thanks & Regards,

Aiswarya

[Peter BENSCH]

Yes, when the chip is completely erased, your custom bootloader, which you previously programmed into the user flash yourself, will also be erased.

[Aiswarya1]

If I select FULL CHIP ERASE, will it erase the original bootloader from the Nucleo - G071 board?

[Peter BENSCH]

As mentioned, the original bootloader cannot be deleted.

So the short answer is: no.

[Aiswarya1]

Thank you, sir, for your support.

[Andrew Neil]

---

@Aiswarya1 wrote:

will it erase the original bootloader from the Nucleo - G071 board?

---

The original ST bootloader is permanently built into the chip at manufacture - it is nothing to do with the board.

As @Peter BENSCH said, it can never be erased.

Note that this is different from Arduino - where the Arduino bootloader is a "user" bootloader, loaded during board manufacture.