said by banditws6:I received confirmation that my unlock went through, so I restored my iPhone. iTunes reported the "Congratulations, your iPhone is unlocked" message that is typical for this process (I had an old 3GS unlocked by AT&T, and it went the same way). Restored from backup. Looks like it worked. I don't have a non-AT&T SIM to test with, but this looks promising.
If you plug your IMEI # back into their online checker, it'll tell you that it's unlocked (a 2nd way of checking).