Best to attempt via Software Update in settings I think rather than iTunes.
iOS 5.1 contains improvements and bug fixes, including:[LIST][*]Photos can be deleted from Photo Stream[*]Camera shortcut now always visible on Lock Screen for iPhone & iPod Touch[*]Camera face detection now highlights all detected faces[*]Redesigned camera app for iPad[*]Genius Mixes and Genius Playlists for iTunes Match subscribers[*]Audio for TV programmes and films on iPad optimised to sound louder & clearer[*]Podcast controls for playback speed and a 30-second rewind for iPad[*]Fixes an issue that occassionally caused audio to drop for outgoing calls[*]Addresses various bugs affecting battery life (saves best until last!)[/LIST]A very large update which takes a long time to install after download. As you can imagine downloads are also very slow at present!
iOS 5.1 contains improvements and bug fixes, including:[LIST][*]Photos can be deleted from Photo Stream[*]Camera shortcut now always visible on Lock Screen for iPhone & iPod Touch[*]Camera face detection now highlights all detected faces[*]Redesigned camera app for iPad[*]Genius Mixes and Genius Playlists for iTunes Match subscribers[*]Audio for TV programmes and films on iPad optimised to sound louder & clearer[*]Podcast controls for playback speed and a 30-second rewind for iPad[*]Fixes an issue that occassionally caused audio to drop for outgoing calls[*]Addresses various bugs affecting battery life (saves best until last!)[/LIST]A very large update which takes a long time to install after download. As you can imagine downloads are also very slow at present!



