I have the 700bt which was functioning fine before i decided to upgrade 3.0.This guy on ebay had a auction for a sd card to fix 700bt, and 900bt.The thing is he told me to copy his sd card into my flash disk directory on my deck , got a error saying not enough room so stupid me decide to delete some files in the my flash disk directory on the deck..now the deck starts with splash screen and turns off.The 900bt just goes to the blue screen and shuts of after 15 seconds..any ideas if i can put the stock files back or restore to original or put new files from avic411 forums back so i can at least