How to unlock iOS 4.1 on iPhone 3GS using Ultrasn0w


09.09.2010

How to unlock iOS 4.1 on iPhone 3GS using Ultrasn0w

In the following guide you will learn how to unlock the iPhone 3GS with iOS 4.1. We all know that the latest Apple firmware, the 4.1, has just been released. Although it works for any iDevice, including the iPhone 4, 3GS, 3G, 2G and iPod Touch ( any versions ), only one can be unlocked at this time. This guide only works for the iPhone 3GS, only if it has already been jailbroken ( check our guide). We advise our readers to have more patience, and not follow the guide linked above to jailbreak their cellphones, as it’s not approved by the Dev-Team.

For the fanatics, listen up. You can unlock the iPhone 3GS on iOS 4.1 by simply following the steps bellow. They present no risk, and are available due to the fact that our jailbreaking guide preserves the baseband. Use it only if your iPhone 3GS has an old bootrom. Now let’s start.

iPhone unlocked

How to unlock the iPhone 3GS on iOS 4.1
  1. Start Cydia.

  2. Touch on the “Manage” tab, located on the bottom of the screen.

  3. Now touch on the “Sources” menu, in the middle of the panel.

  4. Click on “Edit” and then on “Add”. Type http://repo666.ultrasn0w.com in the middle box and then touch on “Add source”.

  5. Wait a bit for Cydia to install the sources and then search for “ultrasn0w 1.1-1”. Install it using Cydia.

  6. Reboot the iPhone 3GS to complete the guide.

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