Building the bootloader for the LilyPadUSB 1. Download the LUFA-111009 file (http://fourwalledcubicle.com/blog/2011/10/lufa-111009-released/). 2. Extract that file directly to the Caterina-LilyPadUSB bootloader directory. 3. Open a command prompt in the Caterina-LilyPadUSB bootloader directory. 4. Type 'make'. 5. Enjoy! Programming the bootloader for the LilyPadUSB 1. Open a command prompt in the Caterina-LilyPadUSB folder. 2. Connect your programmer- use a 2x3 .1" header, pressed against the programming vias. 3. Type 'make program' into the command prompt.