What is the unlock via Ultrasn0w 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.

Ultrasn0w 04.11.08

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.

How to Unlock 04.11.08 Baseband / 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 downgrade 4.11.08 to 1.59.00 baseband. So don’t trust any of the scam sites that claiming the ability of downgrade 4.11.08 to 1.59.00 baseband.

Ultrasn0w 04.11.08 baseband iPhone 4 – What can I do?

If you already stuck on Ultrasn0w 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.

Last Updated:
SHARE
Previous articleGevey SIM Unlock 04.11.08 FuriousMod iOS 5.0.1
Next articlePublic Spire Siri Proxies
Stephan Popov
Stephan Popov is a certified mobile security engineer and the founder of UnlockBoot.com, with over 15 years of experience specializing in iOS software recovery and device unlocking. He provides actionable fixes for common iOS bugs and tools that improve user experience. Stephan conducts in-depth research for every topic covered on this blog to ensure comprehensive, reliable troubleshooting information for Apple and Android users. He holds professional certifications in mobile device repair and security protocols. Connect with Stephan on LinkedIn, X, and Facebook.