I was on the iOS 7 beta in it's entirety and updated to the public version via my phone. Last night I got an activation error which is incorrect as I work for a company that builds apps and we even published 3 apps for the iOS 7 release.
So WHY is my phone bricked? I have SMS data since my last backup that I do not want to lose. I've tried a number of things to try and get my phone to it's non-bricked self and nothing is helping so far. Out of all the things I've tried, below is the closest to a solution:
I retrieved the iOS 7.0.2 ISPW from the Member Developer center and installed it onto my phone. This still wants me to recover from a backup so I found a way to backup my phone after 7.0.2 installed as I could not back it up before. Now whenever I backup to that version I'm presented with the welcome screen and prompted to restore from a backup.