IOS update error
I tried to update my IOS to 8.3. My phone turned off and when I turned it on a logo appeared to tell me to connect my phone to Itunes. When I connected my phone a message appeared that said 'There is a problem with the Iphone which requires it to be updated or restored'. I've tried updating and restoring but nothing has helped the updates haven't completed as there was an error - code 1671-. I've updated my windows and my itunes and followed the instructions on the 'Resolve iOS update and restore errors in iTunes' page apple support.
iPhone 5c, iOS 8.2, null