The LUFA version is 100807, as in the hardware-pinoccio repository. This version is required for both DFU and USB serial firmware. The arduino-usbdfu directory contains the DFU bootloader on the 16U2 ...

##### Usage:Once the Arduino is programed and the 16U2 is flashed, plug the arduino into a Windows computer and let the USB keyboard drivers install as normal. Then wait between 1 and 10 minutes for a ...