Last week I had experienced unlocking iPhone 3GS with iOS 4.2.1, Baseband 5.14. For now, the only solution you can unlock is update the Baseband to 6.15. And when you update to 6.15 you can’t downgrade this baseband to stock, meaning you lose your warranty, since apple will know that you’ve been jailbroken. (I warned you…)
The UltraSnow 1.2 unlock does not support the 4.1 or 4.2.1 baseband that comes with those iPhones. The only way to unlock them is to update them to iPad’s 3.2.2 baseband 06.15 which is fully compatible.
Now if you are still willing to unlock your iPhone, then proceed with the process, else go to another site =)
Now if you are still willing to unlock your iPhone, then proceed with the process, else go to another site =)
Requirements: Mac or Windows, iPhone 3GS in iOS 4.2.1, Internet connection, iPhone USB cable and files; iPhone iOS 4.2.1, iPad iOS 3.2.2
For Mac users, click this site
For Windows, click this site
100% Working!
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