iPhone Dev Team has fulfilled its promise by announcing by announcing the release of their untethered jailbreak for windows, this will help millions of window users as they will be able to jailbreak their iPhone iOS 4.2.1. This version does not require installation of iOS 4.2 Beta 3 firmware as well as SHSH Blobs.
The iPhone Dev Team also announced that the Redsnow 0.9.7 or windows will not run smooth as Redsnow 0.9.7 for Mac OS X. Because Redsnow 0.9.7 for windows will use file system instead of he Ram.
There is yet another announcement on its way coming through iPhone Dev Team that they soon release UltrasnOw, for unlock iPhone 4 after the Apple releases its iOS 4.3.
You may also like my this post :Redsn0w 0.9.7 Update Will Allow You to Untether iOS 4.2.1 Jailbreak Using iOS 4.1 Instead Of 4.2b3