iPhone Dev Team have released an updated version of redsn0w 0.9.6b4 packed with the new Cydia and kernel patches for Windows and Mac OS which allows you to jailbreak final version of iOS 4.2.1 running on iPhone, iPod touch and iPad devices.

For those of you who don’t know, Redsn0w 0.9.6b4 is based on Geohot’s Limera1n bootrom exploit which has already pwned all current iOS devices for life. The only problem is that it is a tethered jailbreak, which means you will have to boot it into a “jailbroken state” on every reboot. This so called tethered or semi-tethered jailbreak condition in Redsn0w 0.9.6b4 however only applies to the new devices like: iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC Model), iPod touch 3G and the iPod touch 4G. Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (Non-MC Model) can be jailbroken-untethered right now using this latest version of Redsn0w.

So until and unless Comex, the developer behind Spirit and JailbreakMe tools comes up with another untethered hack for iOS 4.2.1, the jailbreak we get for the newer devices will be tethered (or semi-tethered).

Download RedSn0w 0.9.6b4:

• Download Redsn0w 0.9.6b4 for Mac [Mirror 1] [Mirror 2]
• Download Redsn0w 0.9.6b4 for Windows [Mirror 1] [Mirror 2]

Other Downloads:

• Download iOS 4.2.1 for iPhone 4, 3GS, 3G, iPad, iPod touch
• Download iTunes 10.1 for Windows or Mac

NOTE:

Those of you who rely on a carrier unlock MUST STAY AWAY from Redsn0w and iOS 4.2.1.

As usual, stay tuned for more news and info regarding jailbreaking and unlocking your iDevices by following us on Twitter and/or subscribing to our RSS feed.

Authors: _GadgetNews

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