i have a AVIC90DVD on a 6400 screen. about 3 weeks ago the navigation stopped working. i could see real time but no longer add new destinations, and if i picked POI the screen would go blank then turn white. so i was hoping the DVD was bad. well i bought a newer DVD on Ebay. not a copy but original. Loaded it and it appeared to update the system. after 2 status bars finished, the system reset. now its saying i have in invalid dish, please replace with correct disk. and my old disk does the same thing. worse than that, the radio and CD and DVD features are all locked out too..
HELP!!!!