The .MDBACKUP file extension belongs to files created via the iPhone and iPod touch backup process. These files are property lists stored in a compressed binary format. You perform a backup of your iPhone/iPod through iTunes.
David 2010-03-25 10:43:37 #1 Can you open and view these files? Horris 2012-10-24 15:15:50 #2 You can use phoneMiner to access the backups
