I've upgraded iOS before, but I don't know if it wipes the device, then restores, or what. My main concern is the BARD app. Is there any way at all to insure that downloaded books stay around during the upgrade, or do I have to make a list of everything I have, put them all on the wish list again, then redownload them? I know a few months ago there was a topic here about the inability to backup downloaded books via iTunes, and as far as I know, nobody answered that topic. Any thoughts?