Mine too got bricked it seems. It will not show up as a usb device even briefly. This was after a flash and successful using of the device. Green LED is on. Reset pins do nothing. I do not have a programmer, but nothing out of the ordinary was done. What can cause this?
Other than that (and the inconvenient and difficult to access reset pins) the board was something I was proud of and I think you guys did a great job.
If you have some more insight into this I’d love to hear from you.