My girl friend has an iPhone and I'm wanting to get her to update to iOS 5 however I don't think she ever connected her phone up to a computer like I have, (It was set up in the store). I tried to plug it in and get it to back up and update but it comes up with the 'set up iPhone' screen and asks if I want to sync. I wasn't sure if this would wipe all her data (contacts, messages, photos etc.) or just her music. (As my iPhone has done sometimes.) Is there a way I can get her iPhone back up update to iOS 5 without her losing any data?