Before upgrading to version 5.2, I installed ATVFlash 2.2 on 5.02 and made a full back up which ended up successfully. I didn’t test or check the back up, because it ended up successfully.
I then upgraded and jailbroke the Atv and installed Atv Flash 2.2 and all available software, then I tried to do a restore from back up, only to find out that the latest back up had 0 (zero) bites.
Luckily for me I had a back up from november 2012 and used that as a starting point, I had to reset the watched history and add all my library again and mark as watched all watched movies from November.
My mistake was that I didn’t check the back up and that cost me about 2 hours of setting up.