I know this is not the appropriate forum, but since there isn't specifically a 2012 thread, I thought I'd post this here.
I got the 4.3 update to my N7 last night and in the process realized I didn't do what I normally do to a rooted device before installing an OTA update, and lost root. In my searching this morning I came across this site:
(FYI, I really hate linking aware from here, but I'm not a writer and don't want to steal anyone else's work)
Anyway, has anyone tried this yet? I'm going to give it a try this evening.