Free upload at the Nikon support website. Here:
http://support.nikonusa.com/app/answers/detail/a_id/18287
http://support.nikonusa.com/app/answers/detail/a_id/18287
If that is all that it does, I won't be updating now. Leaving on a big trip tomorrow, wasn't going to bring my 800/5.6 anyhow (cough), so I'm not going to risk it
Because you never know what things are fixed in these updates (Easter Egg type stuff) I always do it. Something could be fixed that they just don't mention for various reasons (like whoops, how come we didn't fix that before).
f6 is a lens error I believe. He probably needs to clean the contacts.