The 4.3.1 untether works on all Apple devices that support 4.3.2 except for the iPad2:
Redsnow is easy to use, it is available for Windows and Mac OS. As usual for unlockers – do not updaate to 4.3.1, wait for PwnageTool and Sn0wBreeze.
New tutorials are on it’s way. For now you can still use our tutorials for iOS 4.3.1. Just download iOS 4.3.2