Sunday, April 10, 2011

How to Unlock iPhone 4 4.3.1 iOS Baseband 01.59.00 with Ultrasn0w 1.2.1


How to Unlock iPhone 4 4.3.1 iOS Baseband 01.59.00 with Ultrasn0w 1.2.1

Posted: 09 Apr 2011 10:11 PM PDT

We just reported about Ultrasn0w 1.2.1 unlock release which just the compatibility fix for iOS 4.3.1 and doesn't bring any new unlock. Ultrasn0w 1.2.1 also fixes the no signal bar issue resulting because of untethered iOS 4.3.1 jailbreak. If you are on compatible baseband and require carrier unlock then go ahead and install Ultrasn0w 1.2.1 and get it unlocked.

Warning : At any cost don't update to iOS 4.3.1 without preserving baseband. You must use PwnageTool 4.3 or Sn0wbreeze 2.5 to jailbreak iOS 4.3.1 untethered with preserve baseband option. Ultrasn0w 1.2.1  only supports following basebands.

iPhone  4 – 01.59.00

T-Mobile users in the USA also should disable 3G mode in Settings->General->Network.

How to Unlock iPhone 4 4.3.1 iOS with Ultrasn0w 1.2.1

1. Untethered Jailbreak iOS 4.3.1 on iPhone 4 with PwnageTool 4.3 orSn0wbreeze 2.5

2. Launch Cydia from Springboard

3. You should see Two Options Packages and Source.

4. Go to Packages -> Edit -> Add & Enter repo666.ultrasn0w.com URL as a repository URL.

5. Now Go back to Your Cydia Sources menu and you should see the Ultrasn0w package!

6. Click on Ultrasn0w package and select Ultrasn0w 1.2.1

7. Tap on Install button and let Ultrasn0w 1.2.1 complete the install process.

8. After you iPhone 4 Reboots it will be unlocked on iOS 4.3.1. Enjoy!!!


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Sent from my iPad

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