UPDate 2: Attention! We’ve received info, that Apple stopped signing iOS 4.2 for devices for which iOS 4.3 is available. This means you will not be able to restore to 4.2.1 without saved SHSH keys.
Using this tutorial you will be able to jailbreak iOS 4.2.1 running on iPhone 3G, iPhone 3GS, iPhone 4, iPod Touch 3G, iPod Touch 4G and iPad. Pwnagetool will also preserve baseband version if you need carrier unlock. If you have updated the baseband to version 06.15, you can use this tutorial. This tutorial uses PwnageTool 4.2 for Mac OS X.
We are not developers of jailbreak utilities, so we cannot assure that everything will work just fine. However we tried this tutorial on several devices and succeeded.
We will use iPhone 4 in our jailbreak tutorial. The process is the same for all devices.
Step One
Make a folder called “Pwnage” on the desktop. Download a couple of things:
The for xpwn 0.3, the firmware 2.0 version of our cross-platform jailbreaking library/command-line utility have been pushed onto . DevTeam tested it on Linux, Windows XP, and Windows Vista for both the iPhone 2G and iPhone 3G thus far, but since it uses the same FirmwareBundles files as PwnageTool, and we know those work for the iPod touch, there ought not be any problems.
Being a suite of command-line utilities, this release is meant primarily for developers. While you can certainly jailbreak (both 3G and first-gen) and unlock (first-gen) with it, it’s not really something you want to try without reading the lengthy, detailed README. If you don’t have the patience to do that, this release is not for you.
For users this news mean that quite soon there will be a new version of winpwn, supporting 2.0.
