I have an iPod touch 2nd generation jailbroken on 3.1.2 with Blackra1n. My iTunes version is 9.2. When I tried to sync my library on another user account but on the same computer, iTunes gave me this pop up: The iPod "iPod" is synced with another iTunes library. An iPod can be synced with only one iTunes library at a time. What would you like to do? -"Erase and sync" replaces the contents of this iPod with the contents of this iTunes library. -"Transfer purchases" copies iTunes store purchases this computer is authorized to play from this iPod to this iTunes library. I know I should sync on my other user account, but *if* I'm going to sync on this one, would my 3.1.2 jailbreak disappear from my iPod? Would it be sort of like a 3.1.2 restore and then iTunes sync, all in one button?