avic d1 programming software

does anyone know if there's a software development kit for the avic d1?  i want to change the interface for sirius.  xm gets substantial preference with this head unit, it gets pics of the channel and a better user interface.  with sirius basically you get an up and down selection with 6 presets you need to memorize in order to use them; it doesn't even have a channel number to find out where you are on the "dial".  the cheap $75 sirius add on units are better than the interface for this head unit.  but, i want to design my own interface, and was wondering if anyone knew if there was any way to do so.  i have programming experience and didn't know if there is a standard that pioneer used for this head unit.

doubt it, good luck, let us know if you find anything.