As promised by the iPhone Dev Team and MuscleNerd, a new version of Ultrasn0w unlock has been released and is available to download. The new version support iOS 4.3.1, it is basically a patch fix and is developed by msft_guy and iH8sn0w (developer behind Sn0wbreeze). The previous version of Ultrasn0w was unable to unlock iPhone 4 and 3GS devices on iOS 4.3.1, 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 only. It WILL NOT unlock higher basebands, but 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 Redsn0w 0.9.6RC9, 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. To make the patch available, add the following link to Cydia Sources – https://cydia.pushfix.info/. You can also follow the step by step guide posted below: Step 1: Jailbreak your iPhone using Redsn0w 0.9.6RC9, Sn0wbreeze 2.5 or PwnageTool 4.3. Step 2: Launch Cydia and tap on Manage at the bottom right corner. Step 3: Tap on Source Step 4: Tap Edit on the top right corner followed by Add on the top left corner. Step 5: Add the following repository – https://cydia.pushfix.info Step 6: Tap Add Source Step 7: Once installation successfully completes, go to Search and write Ultrasn0w Fixer Step 8: Install Ultrasn0w fixer to unlock iOS 4.3.1 on iPhone 3GS and iPhone 4 Step 9: After installation completes successfully, simply restart your device, and you will have your iPhone 3GS, iPhone 4 unlocked on iOS 4.3.1. We will provide more info as it is made available, as usual, stay tuned by following us on Facebook, Twitter and/or by subscribing to our RSS Feed. You may also like to read: UPDATE: Musclenerd on his twitter account clarified - Authors:

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