Been there, done that. There is no download option for the GM 1.0 firmware. I even searched their website stucture (
www.phatnoise.com &
www.dailyphat.com) to see if the files were there, but not being offered as downloads....nothing. It worked fine until we had a really hot day, then nothing. I ran the DMS Doctor and found the hard drive had lost some files. It's still under warranty but I know the GM dealer doesn't know how to fix it, their rep said they would be sending my whole system back to Phatnoise! I know, I should have backed up the boot portion of my Phatnoise drive...if I had known I wouldn't be able to get the firmware one month after I bought the car, I would have done it first thing!!!... :-/ Oh well...