Unlock iOS 4.3.1 iPhone 4 3GS With Ultrasn0w Fixer


by casey on April 5, 2011

As promised by the iPhone Dev Team and MuscleNerd, Ultrasn0w 4.3.1 unlock, new version of Ultrasn0w is available to support iOS 4.3.1. It is basically a fix and is developed by msft_guy and iH8sn0w. Previously Ultrasn0w 1.2 unlock was broken on the iOS 4.3.1 firmware. That means Ultrasn0w was previously unable to unlock iPhone 4 and 3GS devices after untethered iOS 4.3.1 jailbreak. But now you can use Ultrasn0w 4.3.1 fixer to unlock your device.

Ultrasn0w Fixer 4.3.1 Unlock iPhone 4 3GS

Remember the Ultrsn0w 4.3.1 unlock is compatible with devices running iOS 4.3.1 firmware. Its WILL NOT unlock higher basebands whose unlock is not possible right now. But it will continue to unlock the old ones. You can say that its just a new version of Ultrasn0w for people who have upgraded to iOS 4.3 and also jailbroken it using PwnageTool 4.3 or Sn0wbreeze 2.5. If you are still confuded, it will ONLY be compatible with basebands which includes 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00.

You need to have a jailbroken iOS device in order for iOS 4.3.1 unlock to work. You can jailbreak your device using Redsn0w 0.9.6 RC9, PwnageTool 4.3 or Sn0wbreeze 2.5.

How To Unlock iOS 4,3.1 iPhone 4 3GS With Ultrasn0w Fixer [How To Guide]

UPDATE: Those who are still facing issues after using Ultrasn0w Fixer, iPhone Dev Team has updated:

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  • bobba madhu

    ios 4.3.1 3gs baseband 05.16.02 unlock

  • bringass

    Is that possible? to unlock a ios 4.3.1 3gs baseband 05.16.02?

  • Jodes

    what abut 04.10.01 basebands for iphone 4.3.1?

  • surdip

    what abut 04.10.01 basebands for iphone 4.3.1?

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