Unlock iOS 5.0.1 On iPhone 4 / iPhone 3GS Using Ultrasn0w 1.2.5 [How-To Guide]

Since the release of Redsn0w 0.9.9b9 which included a footnote advising users the newest iteration of the Ultrasn0w unlock (version 1.2.5) would be released this coming Monday via the official repository in Cydia. Here comes an early promised. Ultrasn0w 1.2.5 to unlock iPhone 4 and iPhone 3GS running iOS 5.0.1 has recently been release

Ultrasn0w 1.2.5 DON’T unlock higher basebands. Only basebands mentioned in the post earlier can be unlocked. Ultrasn0w 1.2.5 mainly brings support to iOS 5.0.1.

Well! iPhone Dev Team said that they would push this update next monday, but an unexpected curve ball has been thrown with the apparent early release of Ultrasn0w version 1.2.5. The early release of this unlock tool does not support any new baseband versions, but works to unlock the following basebands:

Ultrasn0w 1.2.5 Unlocks:

If your iPhone 4 or iPhone 3GS running on one of these basebands mentioned above, then continue reading.

If you are unaware of the existence of Ultrasn0w, it is utility created by the iPhone Dev team which allows users to unlock their iPhone, enabling it for use on any carrier’s network. The process is relatively painless and requires a simple installation procedure, after which no further steps need to be taken unless an update is released via Cydia.

The latest release of this utility is aimed to only unlock devices with older basebands (iOS 5.0.1). In order to take advantage of the Ultrasn0w unlock, you have to jailbreak your iPhone on iOS 5.0.1 which at the time of writing can be achieved at a tethered level using the newly released Redsn0w 0.9.9b9.

You already know what is tethered jailbreak, means that you’ll need to connect your iPhone to you our PC or Mac every time it is powered down or requires a reboot in order to boot the device back into a jailbroken state. Now check the current firmware and baseband version by navigating to Settings -> General -> About and check the required information.

If you are jailbroken on iOS 5.0.1 and also supports basebands, then follow these stepos below to unlock your device using Ultrasn0w 1.2.5 right now!

How To Unlock iPhone 4 / 3GS On iOS 5.0.1 With Ultrasn0w 1.2.5

Step 1 : You will need to jailbreak iPhone 4 or JB your iPhone 3GS running on iOS 5.0.1 using Redsn0w with the given tutorial posted here.

Step 2 : After the jailbreak procedure has finished, launch the newly installed ‘Cydia’ application that is present on your iPhone’s Springboard.

Cydia >> Manage >> Sources “; Tap on Manage tab, which followed by sources and finally “Add”. After completing those steps an alert will pop up with the title ‘Enter Cydia/APT URL’.

Step 3 : Add the following URL into the pop up alert – http://repo666.ultrasn0w.com – then select ‘Add Source‘.

Step 4: After adding the repo, search in Cydia for Ultrans0w and you’ll tap on it then hit install on the top right of screen. Congrates, you have successfully Installed Ultrasn0w utility, and now become the owner of an unlocked iPhone.

Just after a respring and tethered boot, you are an Unlocked iPhone 4 and iPhone 3GS unlocked user.