How to unlock your iPhone 4 or iPhone 3GS running on iOS 4.3 using ultrasn0w 1.2
With the latest update of Sn0wbreeze to version 2.3 beta 4 , Ultrasn0w is now compatible with many iPhone basebands. This means that you can unlock your iPhone 3GS or iPhone 4 running on iOS 4.3. What does unlocking a phone mean? To unlock a phone means to remove it’s carrier restriction. Unlocking is technically reversible so you don’t have to worry about voiding your warranty too much. If your phones start acting weird you can restore it through iTunes and send it to be repaired, but only if you actually can restore it, that is, if it works to the point that it can be restored. Legally, you can unlock your phone, it is not protected under the DMCA agreement but it can void your warranty if the seller finds out. Also important to note is the fact that some carriers have no problem with unlocking, to be sure just call them and ask. Some even unlock the phones themselves for a fee.
But there’s a catch, you phone needs to be running one of the old basebands. To check which baseband you have just go to Settings -> General -> About and make sure you have one of these basebands:
- 01.59.00
- 04.26.08
- 05.11.07
- 05.12.01
- 05.13.04
- 06.15.00
Step 1. In order to do this unlock you must jailbreak your iPhone using the Sn0wbreeze tool. To download the latest version of sn0wbreeze please click here.
Step 2. After your iPhone has been jailbroken go ahead and launch Cydia.
Step 3. Do a search for ultrasn0w 1.2 . If you cannot find it you will have to add it manually. But don’t fear because this is a no brainer. Just go to Manage , then Sources and tap on Edit and then on Add. After this write down the following URL http://repo666.ultrasn0w.com
Step 4. Install Ultrasn0w 1.2. After it’s finished installing please reboot the phone and gaze at your unlocked iPhone.
