Use Ultrasn0w 1.2.7 To Unlock your iOS 5.1.1 iPhone 4/3GS Quickly And Easy

Here we will talk about Ultrasn0w 1.2.7 unlock and how to install it using Cydia on your jailbroken iOS 5.1.1 iPhone 4 or iPhone 3GS. After updating to the new iOS and jailbreak with at least three jailbreaking tools now you need to unlock your iPhone.

A day before we wrote you that Ultrasn0w 1.2.7 had been recently updated by iPhone Dev team specially to unlock old basebands. And here I will show you how to install Ultrasn0w 1.2.7 and unlock your iPhone.

ultrasn0w 1.2.7 unlock

This tool was developed only for old basebands on iPhone 4 and iPhone 3GS and you can use it for quick unlock even if your gadget is running iOS 5.1.1. If your iPhone is on 04.12.01 baseband you can use Ultrasn0w fixer 5.1.1 for unlock. So let’s take a look at the supported basebands for Ultrasn0w 1.2.7 unlock.

Note: Go to Setting => General => About and scroll down to see your iPhone baseband.

Supported Basebands

iPhone 3GS

  • 04.26.08
  • 05.11.07
  • 05.12.01
  • 05.13.04
  • 06.15.00

iPhone 4

  • 01.59.00

So if you found your baseband let’s make Ultrasn0w 1.2.7 download.

How to Unlock iPhone Using Ultrasn0w 1.2.7 Repo

Note: You can use any carrier (Sim card) on your iPhone after Ultrasn0w 1.2.7 unlock.

Step 1. As I said in the beginning of this post first you need to jailbreak your gadget but you shouldn’t use Absinthe tool because it doesn’t preserve your unlocked baseband. That’s why choose the jailbreaking how to guides below you like the most.

How to jailbreak iPhone using RedSn0w 0.9.12b1

How to jailbreak iPhone using Snowbreeze 2.9.5

How to jailbreak iPhone using Pwnagetool 5.1.1

Step 2. As you guess you need to jailbreak your iPhone to have Cydia. So launch it and wait till it reloads data. Now you need to install Ultrasn0w 1.2.7.

Note: Your Sim card shouldn’t be in your iPhone.

Step 3. To install Ultrasn0w 1.2.7 just go to Search and type Ultrasn0w to install it. Your Cydia should have it because this tool is added by default. In case you didn’t find it just add Ultrasn0w repo which is shown below. To add it go to Manage => Sources => Edit => Add:

install ultrasn0w 1.2.7

And then go to Search and find it to install.

Step 4. Tap Install, then Confirm and wait till Cydia finishes the installation process.

ultrasn0w 1.2.7 download

Step 5. Now click Restart Springboard and insert any Sim card.

Step 6. Wait till you see that your iPhone is connected to the network.

And that’s it. As you see the process was really quick and easy. Now you can enjoy your unlocked iPhone and all this thanks to Ultrasn0w 1.2.7.unlock and iPhone Dev Team.

I hope you have no questions but if there are some that you know what to do. Just use the comment form below!