so this is kind of a two part question. my update for the very first time failed 3/4th through and corrupted my phone causing my 5 min. update about an hour and a half of forcing a dfu update/restore from backup (second time worked fine). my question is, in all my years of owning an ios device this has never happend to me, what kinds of things can cause this? I typically update through Itunes (wired) with the most updated Itunes, is just a wifi update on the phone more safer does it even matter?