Some of our users have been asking about unlocking the new baseband of iOS 5 and if it’s unlockable or not. A lot of users might have upgraded accidentally to iOS 5 without preserving the baseband to keep the unlock. That makes you lose your unlock. Below we discuss if there’s any solutions.
When you rely on unlock and want to upgrade to iOS 5, you need to preserve iPhone 4 baseband (guide here) and then unlock using Ultrasn0w 1.2.4 (guide here) or Gevey SIM for higher basebands (guide here).
There’s actually no solution if you accidentally upgraded to iOS 5 and lost your unlock.
Downgrade Baseband 04.11.08 to 01.59.00
This process can’t be done and actually, there’s no one currently working on it so don’t believe any scam sites telling you that you can do that.
Unlock Baseband 04.11.09 with Ultrasn0w
Well, the latest Ultrasn0w is made for lower baseband and 04.11.09 baseband is not supported so you would wait for new ultrasn0w version to support it. We say it won’t be released soon.
Unlock Baseband 04.11.09 with Gevey SIM
You’ll have to wait to wait for modified version of Gevey SIM to support this baseband.
Let us know any further questions.
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