By Jimmie Geddes email: firstname.lastname@example.org | Feb 12, 2013 04:33 PM EST
The evasi0n iOS 6.X jailbreak finally offered a jailbreak solution for iOS 6 devices, including extremely hard-to-jailbreak devices like the iPhone 5, iPad mini, and iPad 4. The team has also just released a new application on Cydia that allows you to unlock the iPhone 4 and iPhone 3GS. The iPhone 5 and iPhone 4S are not supported, as the basebands on those smartphones will not work with the tool. LetsunlockiPhone has put together the requirements and a step-by-step tutorial on how to unlock your iPhone. You'll have to make sure your iPhone 4 and iPhone 3GS is running a baseband that will work with the unlocking tool.
Step 1. After jailbreak you need to install Ultrasn0w 6.1 package. To perform this open Cydia => Manage => Source => Edit=> Add this repo:
Step 2. Go to Search, find official Ultrasn0w Fixer 6.1 and install it.
Step 3. Go to Search again and install official Ultrasn0w 1.2.8 Download and Install adding this repo:
Step 4. After installation process you need to restart your iPhone.
Step 5. After device will reboot; wait for the signal.
After you get the signal of your network, your iPhone 4 and iPhone 3GS will be running Ultrasn0w fixer unlock iOS 6.1 device.
You can find more information at Letsunlockiphone.