and if you rely on unlock then here's my post from other thread :
Quote:
Alright every body calm down !! Let's make it simple for newbees to understand how it actually works ok no big deal.
First of all i'd LOVE to mention it doesn't matter which iOS version you are running on your iPhone to UNLOCK your iPhone. Unlock totally depends on your Baseband.
Following Basebands are unlockable by ultrasn0w v1.21:
01.59.00
04.26.08
05.11.07
05.12.01
05.13.04
06.15.00 (For 3G and 3GS users)
Instruction can be found here.
You CANNOT unlock your iPhone on following baseband:
02.10.04
03.10.01
04.10.01
05.14.02
05.15.04
If you are iPhone 3G and 3GS user on above mentioned baseband you can upgrade to iPad's baseband which is 6.15.00 BUT YOU WILL LOOSE YOUR GPS
You're welcome
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