ok, so i had a lil problem to where my screen was just black but the music would play on my avic-900bt. i posted and in the mean time i got lil pissed at the unit and cracked the touch screen. well after i cracked the screen i checked back on the forum, and someone said to try to do the update. well everything went fine untill i got to the windows screen since my touch screen was cracked. i couldnt click nothing. so i bought a new touch screen today and tried to restart the whole update process and now when i click update from sdmmc it says "SDMMC update fail" i tried another sd card i tried formating card still same thing?? any help please

no help?? i tried searching i did notice there was 2 other people who had the same problem in the 3.0 forum but not one answered their question so im not sure if im missing something