Unlocking Iphone 4 AT&T 4.3.3

[Rids103]

Hi.
I Bought an a new white Iphone in the US last week and the person whom I bought it from said it'll work anywhere in the world. I was in a hurry and silly of me not to test it out. And I've seen his included a Gevey Sim but read that its not supported for 4.3.3
Here is my Phone Info:
4.3.3 (8J2)
AT&T 10.0
04.10.01
Is there any way to unlock it??? Please please help would me very much appreciated!

[Sherminator]

I'm sure that the "not supported for 4.3.3" is basically that it hasn't been tested at the time that applenberry.com last updated their website.

I'm sure others will chime in if I'm wrong.

If it does work, You could try the getting the UK carrier O2 to unlock the phone permanently as detailed Here

[douflag]

It works fine. I don't know why some people just don't try it first. It's not like you're updating the firmware. Geez...