Confused about Nexus 7 failing system update to 4.2 During the day today, I got the notification about the available system update to 4.2. SO I confirmed it after ensuring that SuperSU was set to "survival mode" and then it looked like it was actually doing the update. However, when I now check the system version it states 4.1.2 just like it did before. I also rebooted once more in between just in case something wasn't complete or so.

Any ideas? How can I force the update through. There was no indication that anything went wrong during the update, yet I am stuck at 4.1.2 and checking for available updates shows none.

Note: I have encrypted the contents of the tablet (standard option). Can that be an issue here?
I'm getting the same problem and have not encrypted my nexus 7's storage (but it is rooted). Any luck? I've attempted to update it several times with no success. 

To reset the "check for updates" and allow you to attempt the update again, try the following:
In Settings > Apps > All (tab), search for Google Services Framework, clear it's data and kill it. Then go to Settings > About tablet > System Update, and it will find the update.