How to Fix iTunes Error -1 When Restoring iPhone 4 to iOS 6.1.3?

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I have been trying since 1 week to solve this problem, i was trying to upgrade my iPhone4 (iOs:6.1.3) to iOs 7. When i was upgrading it stopped in between the upgrading and was giving error somekind of 3194 error. And then now since 7 days i'm trying to restore my iPhone To 6.1.3 but it is not restoring, it is giving the (-1) error, first it was giving something 3194 kind of error then i upgraded my iTunes to the latest version on windows then a new error appearing, Please help me i'm phoneless since 1 week and it is 8th day of my iphone it is still stuck in recovery mode i tried my all, i showed my iphone to the service man he is saying that it will cause 8000( eight thhousand RS) to fix this problem. And THIS IS TOO MUCH FOR ME. I don't have enough money. Please help me any help would be really really appreciated my brothers and sisters! <3 i'm still in hope that somebody will help me to fix this problem… I would really really APPRECIATE!

You need register your device's UDID with a developer account through a site like http://www.udid.in/.It's $5, and then you'll be able to install iOS 7. You can't downgrade to iOS 6.