my ducky worked fine for one day, then after plugging it out and in again it just stopped working.
It just lights up very shortly with a red led.
I then tried to flash a new firmware.
After that it just lights up with a permanent solid red led when plugged in and I'm not able to flash a firmware again.
Here is the output of my flashing process:
sudo dfu-programmer at32uc3b1256 erase --force
sudo dfu-programmer at32uc3b1256 flash --suppress-bootloader-mem c_duck_v2.1.hex
sudo dfu-programmer at32uc3b1256 reset
[sudo] password for User:
Erasing flash... Success
Checking memory from 0x2000 to 0x3FFFF... Empty.
Error reading line 1.
Before flashing I removed the micro sd card.
Do you have any suggestions what else I could try?