Sn0wbreeze 2.2 to Jailbreak iOS 4.2.1 & Preserve Baseband [How to Guide]

Earlier this day, iH8sn0w, the well-know iPhone hacker has just released Sn0wbreeze 2.2 (aka PwnageTool for Windows), Sn0wbreeaze 2.2 will allow you to jailbreak iOS 4.2.1 by creating custom firmware for Windows. This version is also based on Greenpois0n exploit.

But the question is why do I need to use Sn0breeze while I have a simple tool like Greenpois0n. The main advantage of Sn0wbreeze 2.2 is the capability of preserving baseband with the new feature "Baseband Preservation Mode", which allows you to jailbreak iOS 4.2.1 and unlock your iPhone 4, 3GS and 3G with the existing version of ultrasn0w.

Supported devices:
iPhone 4, 3GS, 3G
iPod touch 4G, 3G, 2G
iPad
You can follow our previous guide posted here to jailbreak iOS 4.2.1 iPhone, iPod touch and iPad, but you have to avoid

Download Sn0wbreeze 2.2 for Windows
Download iOS 4.2.1 for iPhone, iPad, iPod touch
Download .NET Framework 3.5 (required to run Sn0wbreeze) (Thanks CoveringWeb)

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