JoeO:
Great idea!Tim7 - Could you also reverse this? Could you download a program to the 328 that could then reprogram the 8U2? Are the signals available on pins to do this?
This would be something like what the optiLoader does?
Cool! If you get this working, will I be able to download a program to the 328 that reprograms the 8u2 via ICSP, which then reprograms the 328 via ICSP? 