Originally Posted by
Scifience
No need to restore, despite what your carrier's support or unlock instructions email might say.
Just pop in any other carrier's SIM, connect to iTunes, and your unlock will be pushed through.
You only need to restore if you don't swap in a new SIM (restoring is another way to force an activation server check).
Ah. Good to know for next time! I wish they would have told me. I remember the last time I did the unlock using the Restore method.. iTunes forced me to update the iOS and it took forever and make my older iPhone so much slower...