The biggest issue faced in the Jailbreaking community by the iPhone users is the network unlocking issue as most of the basebands are not unlockable still. Apple has become very strict in this particular issue and is giving a hard time to developers to unlock certain basebands.

If one has a jailbroken iPhone he can jailbreak through Ultrasnow 1.2.5 which unlocks certain basebands like 04.26.08, 05.11.07, 05.12.01, 05.13.04, and 06.15.00 on 3GS and 01.59.00 on iPhone 4. It still does not unlock iPhone 4S basebands and also the earlier devices won’t support the future coming OS releases from Apple.

According to some rumors and source, a new unlocking SIM interposer has been developed known as the GEVEY Ultrasnow S, which unlocks the latest iPhone 4S running on basebands 1.0.11, 1.0.13, and 1.0.14.  This is also evident in the video they have provided in YouTube which shows the unlocking of iPhone 4S using that GEVEY Ultrasnow S SIM . The SIM is available for purchase on ApplenBerry site for a value of $54.99 USD, which is expected to deliver starting March. So this is quite a relief for users having a network locked 4S.

The features of the GEVEY Ultra Snow SIM are as follows :

 

 

•GEVEY™ True Plug-and-Play Unlocking SIM Interposer
•No Need to Dial International Emergency Number 112
•Untethered Unlock with no Jailbreak Required
•Compatible with all GSM iPhone 4S SIM Cards
•Complete Unlock with all 2G and 3G data services
•No SIM Card Cutting or Physical Modifications
•Works on iOS 5.0, 5.0.1
•Works on Baseband 1.0.11, 1.013, 1.0.14
•Guaranteed Better Reception than Previous
•Decreased Power Consumption

 

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The video demonstration of the unlocking via the GEVEY Ultra S SIM :