Stuck in Apple logo boot sequence

I have an out of warranty iPhone 5c which was a replacement from the Apple Store for another faulty 5c. The phone started to say "no sim" so I tried a software update which then put the phone in recovery mode. Now it's stuck in recovery mode. .Won't update won't reboot. Nothing just Apple logo and then the plug to iTunes. I was getting error -1. I can repair all phones so if anyone has any ideas as to what can I do to fix. Please chime in!