Greenpois0n iOS 4.2.1 Jailbreak within Few Days

p0sixninja, an important figure behind Greenpois0n posted on his twitter account that Greenpois0n to jailbreak iOS 4.2.1 is coming within next few days. Greenpois0n is based on Geohot’s limera1n exploit, an hardware-level exploit, and Apple can’t patch it up until new iPhones and iPads are released with improved hardware.

Greenpois0n for iOS 4.2 will be tethered and semi-tethered which means you’ll have to connect your idevice to PC to get the jailbroken state on every boot.

GreenPois0n should be updated to support 4.2.1 (tethered or semitethered) within a few days

However the old devices like iPhone 3G (old bootrom), iPhone 3G and iPod Touch 2G can be jailbroken untethered using Redsnow.You might also like to read these posts:

• Jailbreak iPad on iOS 4.2.1 using PwnageTool with Working Cydia [How to]
• Snowbreeze Update is Coming to Support iOS 4.2 GM and iOS 4.2.1 GM Jailbreak
• How to Get the Cydia Working on iOS 4.2
• iOS 4.2.1 GM Jailbreak with Redsnow 0.9.6 b2 on iPhone 4, 3G, 3GS and iPod

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