I have a Xenium chip modded Xbox with a 80gb HD and a dead bios. I soft modded the Xbox to get back to using XBMC. All was fine and dandy until I fiddled via FTP. I now have an error 21 and cannot boot up any dashboard or original game discs (like Splinter Cell to re-install the softmod). Obviously I cannot get into it via FTP either. I have removed the HD, attached it to my PC on the secondary IDE channel and "unlocked" it. I can see it as an attached device. Any ideas how I can access the files and replace them with a backup I have on the PC? I have tried fatxplorer and fatxexplorer both see the XBox drive but both close down before showing the contents (I have installed the VB6 runtimes)... I really don't want to have to re-chip it just to replace one corrupt file...so please, any ideas?