I upgraded my OS from 4.2 -> 4.5 today, and before doing it I backed up my data -- twice. This was using the desktop app for Windows.
It's a good thing I did, because the upgrade crashed the Blackberry and deleted everything. I was finally able to get 4.5 on the device on a second try, but all my data, apps, etc are gone.
I've tried doing a restore from the data but it's not working. I choose Restore in the Desktop Manager and nothing happens. It just freezes on "Transfer in progress"
Any ideas? Is it potentially due to the OS upgrade? The backed up data was from an older OS?