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AT&T Carrier Unlock for iPhone 4 Confirmed! [Coming Soon]

According to the recent update by Kyle Matthews, founder and owner of, iPhone Dev Team and Planetbeing are working hard to unlock iOS 4 on iPhone 4 whos baseband runs a completely different OS called ThreadX which is an RTOS (Real Time Operating System) unlike previous iPhone models. This new baseband OS requires complete rewrite of Ultrasn0w code to unlock iOS 4 on iPhone 4.

iPhone 4

iPhone 4 vs iPhone 3G vs iPhone 3GS Baseband OSs

Some words by Kyle Matthews:

The DevTeam and others have been checking through the iPhone 4, and have noticed the baseband runs a completely different OS than on previous models. The iPhone 3G and 3G[S] both ran Nucleus OS on the PMB8878 baseband CPU (aka XGold 608), where the iPhone 2G ran the PMB8876 (aka S-Gold 2). iPhone 4 uses the PMB9800, or X-Gold 618 - running a separate OS - ThreadX, an RTOS by ExpressLogic.

Another high-resolution screenshot and some videos tweeted by MuscleNerd shows that iPhone Dev Team is only a step away to iPhone 4 unlock.

iPhone 4 Unlock Progress

iPhone 4 iOS 4 Unlock

DevTeam application running on the PMB8878 baseband processor.

Demonstration of Persistent Nucleus tasks in the iPhone 3G baseband SoC.

As soon as iPhone Dev Team releases an updated version of Ultrasn0w to unlock iPhone 4 so that you can use it with any carrier you like, we will inform you. So stay tuned!

You may also like to read:
Spirit Jailbreak for All iDevices on iOS 4 [Coming Soon]
iPhone App to Measure iPhone 4 Signal Strength

[via MuscleNerd, via modmyi Forums, via RedmondPie]

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