Hello ! I'm new here . English is not my native , so I'm apologize ... I have iPad 2 with 5.0 ( Not Jailbroken ). I want to update my OS to 5.1.1 . I have 5.0 and I know I can update directly from the iPad . Since it's the first time I 'm doing this via the iPad , I want to make sure I follow the exact instructions . I have found a guide with screenshots on Apple website . Something I don't understand : does this update is an incremental update ? As much as I understand , the system files & data files ( music , movies , apps , settings , Email etc.) . Thx !