Unlock 04.11.08 Baseband - Downgrade to 01.59.00 iPhone 4 Possibility

By  at Friday, October 14, 2011  

What is the unlock 04.11.08 baseband iPhone 4 or downgrade to 01.59.00 possibility? In other words "After upgrading iPhone 4 to iOS 5 no network problem" One of our readers asked us this question, so that we are going to make this clear in this article. As you know that Apple released iOS 5 for iPhone, iPod touch and iPad on October 12. Many of iPhone 4 users who are relying on unlock with ultrasn0w or Gevey SIM updated their iPhone 4 to stock iOS 5 ipsw firmware, here's the problem exactly.

Unlock 04.11.08 Baseband or Downgrade to 01.59.00 iPhone 4 Possibility


When users upgrade iPhone 4 to stock iOS 5, the baseband (modem firmware) is updated to version 4.11.08 which is not supported with the current version of ultrsn0w and also can't be unlocked with the current Gevey SIM models (Standard, pro, ultra and etc.). So in case you upgraded your iPhone 4 to stock iOS 5 you will no longer able to unlock iPhone 4 with ultrasn0w or Gevey SIM.

So that we recommend iPhone 4 users who rely on unlock with Gevey SIM or ultrasn0w and wanna upgrade their iPhone 4 to iOS 5 to use custom ipsw to preserve the unlockable baseband, so that you will be able to use Gevey SIM or ultrasn0w to unlock your iPhone 4.

Downgrade Baseband 04.11.08 to 01.59.00 iPhone 4 - Any of hacker working on this ?


No, there's no one work on downgrading 4.11.08 to 1.59.00 baseband. So don't trust any of the scam sites that claiming the ability of downgrading 4.11.08 to 1.59.00 baseband.

Stuck on 4.11.08 baseband iPhone 4 - What can I do ?


If you already stuck on 4.11.08 baseband on iPhone 4, you have to wait for updated version of ultrsn0w to support 4.11.08 baseband or modified version of Gevey SIM to support this baseband.

Update: Now you can make iPhone official factory unlock, you can check the details from here 

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