have been using T-Mobile now for a while on my iphone, but for me, the AT&T plan is better and i am switching over. International is better on AT&T, etc.

anyways, im on firmware 1.1.2 unlocked and jailbraked. In the ATT store we were unable to set it up. I told the AT&T representative that ill return tomorrow when i have relocked (re-jailbreaked) the phone.

if i click restore in itunes, will i come back to 1.1.2 and still be unlocked????
or do i need to virginize, back to 1.0.2, oktoprep, update?

please help, im well educated in the iphone update/downgrade/unlock
looking for hte easiest way to give ATT an unactivated phone and then jailbreak it again.