We just reported about Sn0wbreeze 2.8b1 released to jailbreak iOS 5 Beta and now here is Redsn0w 0.9.8b1 for Windows release. Redsn0w 0.9.8b1 for Windows can jailbreak iOS 5 Beta on iPhone 4, 3GS, iPod Touch 4G, 3G & iPad 1. Redsn0w 0.9.8b1 wil be useful for those who want to preserve baseband. The procedure to jailbreak iOS 5 beta with Redsn0w 0.9.8b1 is similar to our Mac Guide.
Please keep in mind its tethered jailbreak and only for developers. At any cost don’t update to iOS 5 beta if you rely on carrier unlock use Sn0wbreeze 2.8b1 to jailbreak iOS 5.