How to unlock your iPhone 4 or 3GS running iOS 4 using Ultrasn0w

Unlocking your iPhone, that is, removing its carrier restrictions shouldn’t be a task too hard for anyone having basic computer skills. All it takes is patience and focusing, reading the steps thoroughly and thinking before clicking. You should be done in less that 30 minutes, but it’s better to take it slow and easy rather than rush things and get yourself into a mess. But, if you get stuck anywhere please feel free to post a comment and somebody from the iOS team will make sure to answer it.

To unlock your Iphone we will be using UltraSn0w, a special tool created by the guys as the Dev-Team which is not only simple to use but it is reliable and safe. With this app you can unlock an iPhone 3G, iPhone 3GS or iPhone 4 running on iOS 4 or 4.0.1. You’ll be done in no time and as I you don’t need a degree in computer science, just some basic technical know-how.

Note that this unlock only works with the following basebands!

• iPhone4 baseband 01.59.00
• 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04

Follow these 8 really simple steps to unlock your iPhone 3G, 3GS or iPhone 4 in order to use it with any carrier.

Note: While this is not mandatory or required it would be good if you can sync and backup your iPhone with iTunes to make sure you’ll save all your important data (photos, music, documents, settings and contacts)

Step 1:  Sync and backup your iPhone with iTunes to make sure you’ll save all your important data (photos, music, documents, settings and contacts)

Step 2:  Jailbreak your iPhone using one of our jailbreak guides.

Step 3: Launch Cydia

Step 4: Usually, Cydia should come with the Ultrasn0w repo. If it’s not there , the just tap the Manage tab , located at the bottom of the screen

Step 5: Tap “Sources” then “Edit” then “Add” and you’ll get to a screen where you need to type in this URL: http://repo666.ultrasn0w.com . Once you’ve inserted that url in just tap “add source”.

Step 6. Cydia will automatically refresh and update sources

Step 7:. Once Cydia is done updating and refreshing the sources tap on the “Search” bar located at the bottom of the screen and type in “ultrasn0w”.  After you find it, tap on it and you should see version “1.0-1”.  Using this software, you will be able to unlock your iPhone so it can be used with any carrier. Click on Install and wait

 Step 8: After it’s done installing, restart your device and voila, you’re iPhone can now run on any carrier. Have fun!

 

Feel free to comment if you have a problem, the crew at iOSdoc.com will make sure that you’re voice will not go unheard.