F900BT Unit. I have tried everything i believe i can through piecing together what i can from the various forums. Initial problem was systems boots then goes dark. I messed up initially and updated wince without backing up like a moron. So i found what seemed to be the US backup. WinCE update then added backup and then tried to update from pioneer site download. That did nothing. Stayed on splash screen. Then tried to follow the instructions from the format MBR/SDMLC forum but the main files are no longer active on pirate bay and using what i could piece together did not do anything either. Still stays on splash. I'm at a loss. I know i can fix this, i just need the proper files for a specific instruction. If anyone out there could possibly help at all it would be much appreciated. Thank you for anyone who responds haha 

Are you still having problems?  I have a F700BT and can maybe help.

I also have  F700bt that wont get past the splash screen and keeps rebooting. Same problems, all the files are no longer valid. If I could just get it back to where I can load up the Pioneer available update, I would be thrilled.