Hi guys, since iOS 8 update the performance of my iPad Air have worsened quite a lot (especially Safari performance). There are other disturbing bugs such as the strange sounds, which occasionally completely disappear an the only solution is a reboot. I am now considering to make a clean install of iOS 8, but I don't want to erase any of my data. How can I do this? Make a backup and then restore? Any hints for an Apple newbie ?