SAMD51 doesn't enter to bootloader mode "Unknown USB Device (Device Descriptor Request Failed)"

Development Boards
1

Hi, everyone!

I have an issue with my SAMD51 (DEV-14713 ROHS). I was working with it and, suddenly, i wasn’t able to enter in the bootloader mode in the micro. If i tap the button twice, the led start to blink in an eternal loop, but the SAMD51 doesn’t enter in the bootloader mode. In the Device Manager appear the message: “Unknown USB Device (Device Descriptor Request Failed)”.

Any help? maybe, upload the bootload? is it possible?

Thanks!

2

Was it working before and now it won’t?

You might try a pen or stick to do the double clicking of the reset button, sometimes it’s hard to do with a finger.

3

Exactly. Now i can’t upload my code. Anyway, i was reading, and in the sparkfun’s page indicates:

Upload Errors:

Upload errors get a little more tricky. You will usually just see the Arduino IDE trying to upload to the board multiple times. There are usually several different causes for this, often without specific errors in the console. Here are a few common examples:

Wrong Board Selection:

Double check you board selection options. If you uploaded with the wrong board selection, there is a small chance that you may have overwritten the bootloader on the board or damaged the microcontroller.

That was probably the problem.

But i keep wondering if it is possible to reload the bootloader (UF2) on the SAMD51 when things like this happen.