As you are most probably aware Apple has released iOS 5.1.1 to the general public and like every firmware release you get lots of updates regarding the new firmware. Well you might already know that whenever a new firmware is released you should not upgrade in order to avoid losing your jailbreak status or your unlock status, but those who simply can not wait read ahead.
So you want to upgrade to iOS 5.1.1 without losing your unlock status? Well an unknown hacker has managed to update the Ultrasnow fixer file for iOS 5.1.1. If you have accidentally upgrade to iOS 5.1.1 and are on an unlockable baseband you can follow the guide below to unlock iPhone 4 or iPhone 3GS.
Unlock iPhone 4/3GS On iOS 5.1.1 Using Ultrasnow fixer
If you are not sure on how to follow the steps below, do not attempt this as iPhone Dev team will soon release the Ultrasnow for iOS 5.1.1. But those who can’t wait follow the guide below to unlock iPhone on iOS 5.1.1
As this is not a major update, only those basebands which are unlockable with Ultrasnow can be unlocked. Below are the supported basebands:
- 01.59.00 (iPhone 4)
- 04.26.08 (iPhone 3GS)
- 05.11.07 (iPhone 3GS)
- 05.12.01 (iPhone 3GS)
- 05.13.04 (iPhone 3GS)
- 06.15.00 (iPhone 3GS)
Note: This will not support baseband 4.11.08 or 4.12.01
Download Ultrasnow 1.2.5
Download Ultrasnow fixer patch
i-FunBox For Windows
DiskAid For Mac
Guide To Unlock iPhone On iOS 5.1.1
STEP 1: If you have i-FunBox or DiskAid launch it.
STEP 2: Navigate to /private/var/root/Media.
STEP 3: Now create a folder called Cydia inside the “Media” folder.
STEP 4: Now inside the “Cydia” folder create another file called “AutoInstall” Folder.
STEP 5 Now inside the /private/var/root/Media/Cydia/AutoInstall copy Ultrasnow 1.2.5 file (download from the link above), MobileSubstrate (download from the link above), Ultrasnow fixer patch (download from the link above) to that directory.
STEP 6: Now Reboot iPhone. As this only a tethered jailbreak exists you will need to boot tethered.
That’s it you will have successfully unlocked your iPhone 4 or iPhone 3GS on iOS 5.1.1.
As always hit the comment section below for any queries .