In case you don’t already know, Sn0wbreeze for Windows is an alternative to PwnageTool for Mac which allows you to create custom firmware files which are jailbroken, untethered, and without the upgraded baseband.
The highlight feature of Sn0wbreeze 2.2 is going to be a new “Baseband Preservation Mode”. This new mode will enable current iPhone 4, 3GS and 3G users to preserve their baseband while upgrading to iOS 4.2.1 so that they can unlock using existing version of Ultrasn0w.
Sn0wbreeze 2.2 will also enable you to play Pac-Man game to keep you busy while the custom IPSW is being built for your iPhone, iPad or iPod touch, along with the ability to change boot logos, thanks to GreenPois0n RC5/6 exploit.
There is no ETA given for Sn0wbreeze 2.2. We will of course keep you updated as soon as we know more about it. Stay tuned !