Unlock iPhone 3GS with UltraSn0w Fixer for UltraSn0w
As we wrote previously and you all know Apple has seeded their new iOS upgrade 4.3.1. This upgrade was meant to prevent jailbreak and unlock for iPhones and iPads but luckily jailbreak developers are working hard to provide jailbreak and unlock solutions for all iPhone users out there. Dev Team has previously provided the Pwnage tool 4.2 which can jailbreak 4.3 iOS firmware and another iPhone jailbreak developer named DjayB6 has jumped in with some upgrades for Pwnage Tool (so called Pwnage Tool 4.3.1 bundle) which enables this version of the jailbreak tool to jailbreak even iPhones on iOS 4.3.1. Pwnage tool is Mac only jailbreak tool, but windows version should also be available soon.
If you have an iPhone 3GS and you would like to unlock, you will first have to jailbreak your iPhone with Pwnage tools version 4.2 (this will preserve your unlockable baseband) and then you can use the UltraSn0w unlock as explained in the following short guide.
Please note: this will work only for jailbroken iPhone 3GS with 4.3.1 iOS firmware
How to install UltraSn0w 1.2
- Tap Cydia icon on your iPhone home screen and choose “Manage”. Now select “Sources”.
- Choose the “Edit“ option in order to add new source for Cydia and add this repository: http://repo.666.ultrasn0w.com
- When you have added this source you only have to search for Ultrasn0w in Cydia and when found tap on it in order to install the package.
- Respring your iPhone in order to finish the installation.
How to install Ultrasn0w Fixer
- Tap on Cydia icon.
- Go to “Manage” then tap on “Sources”.
- Again add a new repository by choosing “Edit” followed by “Add source”.
- Type in the new source into the URL bar: http://djayb6.com/
- Cydia will now download and refresh the list of repositories.
- In Cydia tap on “Search” option and search for Ultrasn0w Fixer.
- When Cydia finds the Ultrasn0w Fixer tap on the app to install it on the iPhone.
This is all, your iPhone 3GS iOS 4.3.1 is now unlocked and you can use it on other network carriers.




