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How To Unlock iOS 4.3.2 On iPhone 4 / 3GS

How To Unlock iOS 4.3.2 On iPhone 4 / 3GS

iPhone developer DjayB6 has released a new version of Ultrasnow Fixer for iOS 4.3.2 that makes ultrasn0w 1.2.1 unlock iPhone 4 and 3GS. First you will have to  jailbreak and then use the Ultrasn0w Fixer for 4.3.2 to Unlock.

But, before trying out the new Ultrasn0w Fixer please check if your baseband is compatible with Ultrasn0w 1.2.1 or not. To check your baseband go to Settings >General > About and Modem Firmware version.

  • Ultrasn0w Fixer for 4.3.2 supports unlock for basebands (01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00)
  • Ultrasn0w Fixer for 4.3.2 is NOT compatible with the following basebands (02.10.04 / 03.10.01 / 04.10.01 / 05.14.02 / 05.15.04 / 05.16.02)

There is no software base unlock for you at present in case your iPhone 4 is already on the new baseband running iOS 4.3.2.

Remember : iPhone 3GS can upgrade to iPad’s 06.15.00 baseband to unlock on 4.3.2. To upgrade iPhone 3GS baseband to the iPad’s 06.15.00 you can use Redsn0w, which comes with an option to upgrade the baseband to that of the iPad’s but it may cause you to lose your GPS.

If your baseband is in the Compatible list, you can start the procedure. But first you need to Jailbreak iOS 4.3.2 using PwnageTool. It is important that you do not use Redsn0w Jailbreak as it will not preserve your baseband.

You can now unlock your iPhone on the supported basebands using Ultrasn0w 1.2 from Cydia

Follow the instructions below to unlock your device

1. Start “Cydia” on your iPhone.

2. Then touch on “Manage” tab at the bottom.

3. Now touch on “Sources” as shown below:

4. Next, touch on “Edit” and then on “Add”. You will now be prompted to enter a url source as seen in the screenshot. Type http://djayb6.comand touch on“Add Source” to add this repo if you haven’t already.

Cydia will now automatically update your sources by following a series of automated steps.

5. Once installation is completed, search for “ultrasn0w fixer for 4.3.2” in Cydia and install this appliction. Now, this app will automatically unlock your iPhone so that you can use it with any carrier.

6. Restart your iPhone and you should  have a  unlocked iPhone 4 or 3GS, running iOS 4.3.2.