So when can we start reprogramming the chip that translates between the phatbox and the headunits??
Does anyone have a schematic?
It's on the wiki
http://wiki.phathack.com/Hardware_FAQ
So has anyone traced the connections between the microcontroller and the CPU and from the micro to the output?
Nope. I traced a few pins but decided it wasn't going to be that helpful and stopped. A DMM with continuity testing (buzz mode) and a lot of free time will do it. :)