why even bother to register and post if that's the kind of unnecessary help you give around here...
I was assuming that the OP had tried this TU and had it working (if not why even upload it?) and was asking for suggestions RELATED TO THIS... not asking about new firmware or retail discs...
Tried this TU for Driver San Fran and am still getting an "unsupported disc" error. i tried deleting system cache and restarting the xbox. any other suggestions?