The iPhone developer and hacker iH8sn0w has just teased a screenshot of Sn0wbreeze 2.2 with 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.

iH8sn0w: Adding a new mode to sn0wbreeze. — http://twitpic.com/3k3mt6 (cleaning up the GUI a bit too).

For those of you who don’t know, Sn0wbreeze is an alternative to PwnageTool for Mac which allows you to create custom firmware

files without the upgraded baseband. But this new “Baseband Preservation Mode” is different, as it allows you to restore your iPhone to iOS 4.2.1 without upgrading the baseband.
There is no ETA given for Sn0wbreeze 2.2. All we know is that it is coming soon. We will of course keep you updated as soon as we know more about it. Stay tuned !