iphone 4s itunes restore error "-1"
I got iphone 4s from my cousin,so when i tried to restore it using the phone,the phone got stuck,then i tried to restore it using the itunes which i made sure is upgraded to the latest version and i also downloaded the latest ios version,i tried both with 8.3 and 8.4.1 but both times nothing.I'm now stuck at error "-1" and in a recovery loop.Its been a week i have been trying different techniques and feeling very frustrated,plz help.I have already posted this in software update community but no luck as no one even answered.Does no one know about "error -1" like everyone else on the internet,this developer forum is my last option,plz guys i need your help
iPhone 4S, iOS 8.4.1