How to Unlock the iPhone 4 with Ultrasn0w

While an official iPhone 4 Jailbreak just released a few days ago, now the Ultrasn0w carrier unlock was unveilved by the iPhone Dev Team, allowing US owned iPhone 4 users to use a different carrier than AT&T.

Update (October 10, 2010): New Limera1n iOS 4.1 Jailbreak Released by GeoHot for iPhone 4, 3gs, iPod Touch and also iPad

Notes:

1. As always, Jailbreak and Unlocking your iPhone device is at your own discretion.

2. The new Ultrasnow iPhone 4 Unlock works on iPhone 4 on iOS 4.0.1 / 4.0 on 01.59.00 baseband.

3. For previous iPhone models, check out How To Jailbreak iOS 4 using PwnageTool 4.01 hacktivation: iPhone 3GS, iPhone 3G and iPod Touch 2G.

How To How to Unlock the iPhone 4 with Ultrasn0w

1. Jailbreak your iPhone 4 using JailbreakME 2.0.

2. Now that your iPhone 4 is Jailbroken, you will have Cydia installed on it. So go ahead and start it.

how to unlock iphone 4 ultrasnow 1

3. Select “Manage” from the bottom of the Cydia home screen.

4. Select “Sources”.

5. Go to “Edit” and then select “Add”. In the URL box (screenshot below) enter “http://repo666.ultrasn0w.com” and confirm by “Add Source”.

how to unlock iphone 4 ultrasnow 2

6. Cydia will go through required source updates.

7. Search for “ultrasn0w 1.0-1” in Cydia and install the Ultrasn0w Carrier Unlock App.

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8. Restart your iPhone 4.

Congratulations, you now have an unlocked and jailbroken iPhone 4.

iPhone Dev Team Via: Redmond Pie

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