01MGGT

So I bought a 2010 Mustang GT this past week in amazing shape (6th I have owned lol) And it has the non navigation Shaker system with Sync. According to the sync website my system has not been updated since it was built. I see version 4.4 is available. I copied the files to 5 different flash drives ranging from 2GB to 32GB. Overtime I go to Sync USB and select install application it says installation failed either not enough space or not for this device. I don't know if this is because eI removed an old 2010 Fusion from this same account and there is a mix up or what. But, after 3-4 hours I never got it to work. I have PMed FordIVTeam with no response. Any ideas?