If you use an iPhone or iPad primarily with a Windows PC, you’ll be happy to hear that sn0wbreeze 2.1 is now available to download. Sn0wbreeze 2.1 serves a similar function as PwnageTool does for Macs, allowing Windows-based jailbreakers to preserve their current baseband (to preserve a carrier unlock) and also to use custom IPSW files.

Sn0wbreeze 2.1 works with iPhone 4, iPhone 3GS, iPhone 3G, iPad, iPod touch 4G, 3G, 2G, as well as the new Apple TV. The utility is verified to work with iOS 4.1 for iPhone and iPod touch, and iOS 3.2.2 for iPad, but there is no word on iOS 4.2 support yet.
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