Ultrasn0w 1.2.7 to unlock iOS 5.1.1 on iPhone 4, 3GS is now available. Since the release of Redsn0w’s iOS untethered jailbreak, 0.9.12b1, we have been hearing rumors that Ultrasn0w 1.2.7 will come up with a new version to unlock iOS 5.1.1. Now we know for sure that this rumor is true.

Just a few minutes ago, iPhone Dev-team released Ultrasn0w 1.2.7 which will enable users to unlock the following basebands.

Ultrasn0w 1.2.7 Supported Basebands:

• 01.59.00
• 04.26.08
• 05.11.07
• 05.13.01
• 05.12.01
• 06.15.00

Ultrasn0w 1.2.7:

For those who have been living under a rather large rock lately, let me tell you a little bit about Ultrasn0w. Ultrasn0w is a service that that allows iPhone users to unlock their iPhone devices so it can practically work on any carrier’s network. Ultrasn0w was originally started by iPhone Dev team. The installation steps are quite simple and you only have to go through the steps once unless an update is released by the Cydia store.

If you have one of the basebands mentioned above and you want to unlock a device that is running on operating system 5.1.1 just follow these few steps.

How To Unlock iOS 5.1.1 on iPhone 4, 3GS With Ultrasn0w 1.2.7:

Step 1: Jailbreak your iPhone on iOS 5.1.1 with the available tethered jailbreak with Redsn0w 0.9.12b1 or Sn0wbreeze 2.9.4

Step 2: Launch the Cydia application that has been just installed. You will find that on your Springboard

Step 3: Tap the “Manage” icon then select “Sources” then “Add” to add the default link.

Step 4: Write down the following repo in the alet and then tap “Add Source”

•  http://repo666.ultrasn0w.com

Step 5: Sit back and watch as Cydia is done refreshing and adding packages. After that is done, install Ultrasn0w 1.2.7 to unlock iOS 5.1.1 on iPhone 4, 3GS.

Well Done.

You can follow our step by step guide to jailbreak iOS 5.1.1 untethered with Sn0wbreeze 2.9.4, Pwnagetool 5.1.1 or with Redsn0w 0.9.12b1.

Now you can enjoy the privilege of having an iPhone running on Apple’s latest iOS that is also unlocked to work on any carrier’s network. If you found this post useful, hit the +1 (recommend) button and share this post with your friends to unlock iOS 5.1.1 with Ultrasn0w 1.2.7.