Got the same thing. Was downloading for about 45 minutes then got notification download failed. Now I'm up to date. Killing me!
I got the notification after I got out of the movies. I hit download but nothing happened. Rebooted several times now and it still says I'm up to date. Where's my Jelly Bean? Haha.
I am at 6.16.215.. Hopefully I will still get the OTA update.