Unlock iOS 4.3.1 iPhone 4 3GS With Ultrasn0w Fixer

April 6, 2011 at 11:48 AM 3 comments

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.

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.


Step 1: Open Cydia on your iPhone 4 or 3GS

ultrasn0w-fixer-for-ios-4.3 (1)
Step 2: Go to Manage->Sources

ultrasn0w-fixer-for-ios-4.3 (2)

Step 3: Now tap on “Edit”, then tap on “Add”

ultrasn0w-fixer-for-ios-4.3 (4)

ultrasn0w-fixer-for-ios-4.3 (5)

Enter the following repo
Now tap on “Add Source”

Step 4: Tap on Done.

Step 5: Tap on Pushfix.info and install

ultrasn0w-fixer-for-ios-4.3 (6)


Step 6: After the installation Go to Pushfix.info again. Now scroll down and look for “Ultrasn0w fixer for 4.3.1” Tap on it. Install the package. It will ask you to reboot your device.

ultrasn0w-fixer-for-ios-4.3 (7)

ultrasn0w-fixer-for-ios-4.3 (8)

ultrasn0w-fixer-for-ios-4.3 (9)


Via @ Ultrasn0w

Entry filed under: Mobile Tech & Trends, Web News & Trends. Tags: , , , , , , , , , , , , , , , , .

How to Jailbreak iOS 4.3.1 for iPhone, iPod Touch & iPad 1 The Evolution of Mobile, At Its Most Beautiful

3 Comments Add your own

  • 1. AT&T's iPhone Unlock Process Detailed  |  July 15, 2012 at 6:21 AM

    Just desire to say your article is as surprising. The clarity on your put up is just spectacular and i can assume you’re knowledgeable on this subject. Well with your permission let me to grasp your feed to stay updated with forthcoming post. Thanks a million and please carry on the gratifying work.


    • 2. Rey  |  October 24, 2014 at 3:38 PM

      You’re most welcome 🙂


  • 3. Ardis Nordmann  |  October 24, 2014 at 1:58 AM

    Unlock iOS 4.3.1 iPhone 4 3GS With Ultrasn0w Fixer | Virtuoso ®

    […]I can’t see the download link to get PANGU… Please tell me how to download it !![…]



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