Together with redsn0w and PwnageTool The Dev Team has also released a new version of ultrasn0w which is 100% compatible with iOS 4.3.3 but not with the related basebands. The new version ONLY works if you update to iOS 4.3.3 using a custom ipsw. If you jailbreak with redsn0w you CANNOT install ultrasn0w because it won't work, don't try because it won't work. Make a custom ipsw with PwangeTool, restore with it and then install ultrasn0w to be sure you don't have problems.
This version of ultrasn0w DOES NOT DECODE any baseband higher than 01.59.00 for iPhone 4 and 05.13.x for iPhone 3G/3GS!
