hey every1, I have an iPad 3 running 6.1.3 and I don't wont to update it to ios 7, but yesterday by chance I open software update and I found this surprising thing that my ipad is downloading ios 7 without even asking me, I reset all data and setting, and again it downloading the ios another time, so I found the best way is to forgot all wifi , to stop it, is there anyway to stop this , I''m afraid that someday I turn my ipad screen and found the ios 7 is in it

... Thanks in advance