Hi all, finally bought my ipad !!! So happy ! It came with iOS 3.2.1 Several questions : If i'm not mistaken, iOS 3.2.1 is not the last version of 3.x (it's 3.2.2 I think ?) Am I right ? I see I need to backup my "SHSH" . What is it exactly and what is the best way (mac or pc) to do it ? Do I need to backup the whole iOS if I upgrade to 4.2.1 and want to revert back ? jailbreak 4.2.1 is still tethered right ? thanks !