I have a avic-x930bt and it stopped working when I installed the Condis hack 2.1. I'm able to boot into the hack menu, but Im unable to use my headunit. once I start my car it will freeze to the pionner screen asking if I want to boot into the hack. When i choose no it just sits there and does nothing. When I press yes it boots into the hack screen. When I boot without the loaded sd hack it just freezes at the pioneer logo screen. So I cant get into the default screen and acutally use my headunit please help me

Is the same thing that's happend to me, Please help me, how can I reboot my radio AVIC-X930BT?.

http://avic411.com/index.php?/topic/35280-upgrading-a-x920x930-to-x940-instructions/page__st__105#entry257967

if you have 4.x, then you need to use the files from 4.x to replace the contents of either PRG0 or PRG1 (determined by existence or nonexistence, respectively, of PRG.FLG)