Q: my iphone4s is not restoring and its show unknown error -1
suddenly my network tower was gone.then for that i reset my phone but it network tower was not appear then i restore my phone from itunes and start upgrading then after it is not working and idea please..
iPhone 4S, iOS 8.3
Posted on Jun 18, 2015 2:56 AM
by léonie,Apple recommended
iLife
First try the basic trouble shooting measures listed here: Resolve iOS update and restore errors in iTunes - Apple Support
If the problem persists, find your error number on this support page: https://support.apple.com/HT204770
Posted on Jun 18, 2015 3:03 AM