Whenever I'm trying to download ios 10.2 its only downloads for a minute or two and displaying this error. "there was a problem downloading the software for the iPhone "iPhone". An unknown error occurred (9006). Make sure your networking setting are correct and your network connection is active, or try again later." I did everything I can. And I'm sure there is not any problem with the internet connection also. It works fine. Does anyone have an idea how to fix this?