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K2 v1: USB Device Descriptor Request Failed - Can't upgrade firmware, HID USB not found - Half-left lights on while boot clasped - connects to bluetooth on machine but won't light up
![I once used Arduino Uno as a HID, and I can't turn it back to normal Arduino. - Installation & Troubleshooting - Arduino Forum I once used Arduino Uno as a HID, and I can't turn it back to normal Arduino. - Installation & Troubleshooting - Arduino Forum](https://aws1.discourse-cdn.com/arduino/optimized/4X/9/9/4/994222e2e056e057dc875a1dd8fb4c6ced3e5a3e_2_682x500.png)
I once used Arduino Uno as a HID, and I can't turn it back to normal Arduino. - Installation & Troubleshooting - Arduino Forum
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