iOS 5.1.1 was released few days ago bringing a number of bug fixes and HDR photos improvement. Jailbreakers and unlockers were asked to stay away from the update but I am sure some went on to update regardless of the warning. The main problem is for the unlockers as you can?t connect to your carrier which leads to a problem. In most cases, ultrasn0w could be reinstalled but since there is no update from the Dev Team, you now need to rely on ultrasn0w fixer 5.1.1. Read on for more details.
Ultrasn0w fixer 5.1.1 allows you to unlock your iPhone 4/3GS on Apple?s latest firmware. The basebands supported include 01.59.00, 4.26.08, 05.11.07, 05.12.01, 05.13.01, 06.15.00. The iPhone 4/3GS must be jailbroken on iOS 5.1.1 with the latest redsn0w tool.
How to Use Ultrasn0w Fixer
Step 1: The first step is to jailbreak your iPhone on iOS 5.1.1.
Step 2: Open Cydia and add the 3rd party repository ultrasn0w fixer for 5.1.1 is hosted in. After Cydia opens, go in the Manage tab > Sources section > tap the Edit button > tap the add button and enter the following source:
Step 3: After the source has been added, go to the iparelhos repo section. After you see the ultrasn0w fixer 5.1.1, just install it on your iPhone.
Step 4: After ultrasn0w fixer has been installed, head over to Cydia?s Search tab and search for ultrasn0w. After you find it, install it and reboot the iPhone.
After you go through with these steps, your iPhone 4 or 3GS will be unlocked on iOS 5.1.1. Make sure to install ultrasn0w fixer 5.1.1 before ultrasn0w if you?re facing issues. Those who did the reverse case need to uninstall both packages, reboot the iPhone and follow the walkthrough again. Feel free to comment!