OpenCR 1.0 usb not recognized

Hello,
I am using windows and Arduino IDE. The opencr board is not recognized. I have tried the firmware recovery option mentioned in the manual. It is not working .

Please inform me about other options to solve the issue.

Thanks

Hi @Sarwan
Have you tried updating bootloader?

Also check if there’s any hardware damage on the board, especially near the micro USB connector.
Thanks.