I have two new Xplained boards: an mega1284P and an xmega128a1.
Lot's of searching has failed to give me a definitive answer:
Is there a possibility of programming via avrdude through the existing UC3B chip's bootloader/serial interface on the boards?
I could do it through a JTAGICEMKII or an STK600 jtag, or a cable and an AVRISPMK2, but it would be convenient for field upgrade on this project to be able to use the USB interface.
It seems the LUFA bridge was primarily for the older AT90 chips?
I'm using linux with avrdude 5.11.1.