iOS 7 is finally here, and countless users around the world are downloading the new software at this very moment. For some users, though, iOS 7 will probably not arrive so smoothly. We, ourselves, have experienced a bit of a glitch, with the download giving us an unknown error, for a seemingly unknown reason (unknown to us, at least)...
Source: http://www.phonearena.com/news/Any-iOS-7-update-issues-Report-them-here_id47560
Source: http://www.phonearena.com/news/Any-iOS-7-update-issues-Report-them-here_id47560