I thinked I bricker my phone.

I updated to iOS7 GM and decided to go back to iOS 6. Did that successfully, but then I decided to go BACK to iOS 7. Now my iPhone 5 is stuck at the configuration page. It says "Could Not Activate iPhone." I have warranty on my phone and I was wondering if Apple covers this problem. Or is there anywany I can fix this. Thank you. 😐