Please take a look at my new application: I need some feedback.
This program changes "magic number" inside FILESTORE.DAT and FILESTORE.DAT.TXT to enable old backups to be restored on formatted/flashed phones. Just install NoPanicBackup both on a1000 and PC: the a1000 version will give you the current "magic number" (i.e., serial number of internal virtual hard disk); input this number into PC version of NoPanicBackup to replace all its occurencies inside FILESTORE.DAT and FILESTORE.DAT.TXT.
http://jumpjack.altervista.org/NoPanicBackup/NoPanicBackup.html
It's completely free!