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Oct 5, 2015 10:17 PM in response to Manvir Singhby ChrisJ4203,This support document describes that error. If you see Error 3194, Error 17, or 'This device isn't eligible for the requested build' in iTunes - Apple Support
That is generally seen if you attempt to install an iOS other than the one your device is designed for. An iPhone 4s if restored should only use iOS 9.0.2. If you try something else, you will see this error. Follow the steps in the support document and let iTunes install the regular iOS instead of trying to force something else.