14 DAY TRIAL // Although iOS 4.2.1 GM has been confirmed as jailbreakable, a Cydia-compatible version cannot be installed as of yet. That’s not to say Cydia for iOS 4.2.1 isn’t ready. It’s just not available to the masses, according to those who’ve carried out the first jailbreak of the software.
Earlier this week, Apple released the iOS 4.2.1 GM (gold master) to developers, which marked the third time the company reportedly delayed the release of its latest iOS software update.
Redmond Pie, a source which generally takes it upon itself to provide comprehensive jailbreak and unlock guides for iPhone and iPod touch users, reveals in a recent post that iOS 4.2.1 GM can be jailbroken on several iOS devices using the iPhone Dev Team’s redsn0w utility.
Currently at version 0.9.6 beta 2, redsn0w is capable of pwn-ing a stock iOS 4.2.1 GM IPSW, which means that the final version of the software is likely to be jailbreak-supported, “out of the box”.
According to the web site, tests carried out with the iOS 4.2.1 GM jailbreak have confirmed that “Cydia wont work just yet because Apple has changed some of the private APIs used by Cydia in iOS 4.2.x because of which Cydia crashes when you try to run.”
The report continues with some good news, revealing that “an iOS 4.2.1 compatible version of Cydia is ready and will go live as soon as iOS 4.2.1 is released to public.” (emphasis ours)
It adds that GM jailbreakers can install jailbreak-apps via SSH for now, since they will gain full root access on the device via the redsn0w hack.
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This article has a purely informational purpose and doesn't, in any way, suggest that you should hack your Apple device.
Using hacks may render your device unusable, or may reduce the quality of your experience employing the respective device.
If you choose to download and install jailbreak tools, you will do so at your own risk. Unlocking / jailbreaking your iPhone / iPod touch / iPad / Apple TV may violate your warranty or the EULA with Apple and / or your cellular-service provider.