Download RedSn0w 0.9.7b1 to do an Untethered Jailbreak of iOS 4.2.1 [For Mac users Only]

iPhone Dev Team has just released a testing version of RedSn0w which will untethered Jailbreak of iOS 4.2.1 for all iOS devices including iPhone 4, iPod touc 4G and iPad. It’s for Mac OS X users only. It’s a testing version and not a public release.

So it is recomended to Please read this Articles before you move on:

Download RedSn0w 0.9.7b1 here

Follow the Gudie Here to Untethered Jailbreak iOS 4.2.1.

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