Bricked Pro Micro QWIIC and remedies aren't working

Development Boards Other Microcontrollers
1

I have bricked two Pro Micro Qwiic Boards (third time worked fine so I not a complete idiot. Here’s my status:

  • Windows Device Manager gives me "Unknown USB device (Device Descriptor Request Failed).

  • Double Punch RST opens port when coupled with CNTRL U .

  • upload fails with following message:

avrdude: butterfly_recv : programmer not responding

avrdude: error: programmer did not respond to command: exit bootloader.

Any ideas?

2

Hi bigguy6216,

If following the suggestions [here is not working, it may be due to a couple of things. First, make sure you’re selecting the right board (SparkFun Pro Micro) and Processor (ATMega32U4 5V/16MHz) and remove all peripheral devices and connections from your Pro Micros. Also, verify you’re uploading to the correct port when the boards are in bootloader mode. Next, if you are trying to upload a full sketch, try just uploading either a blank sketch or something simple like “Blink”. The last suggestion I have is, since you have a small window of time while the code compiles, try resetting the board into bootloader mode while the code is compiling, then select the correct port and that may fix it.

I hope this helps you recover your Pro Micros!](Qwiic Pro Micro USB-C (ATmega32U4) Hookup Guide - SparkFun Learn)