It's 1GB and why not?Yeeeeaaahhh.....I'm pretty sure that they're not gonna include a 5GB update on a game disc.
Anyways Drakorex, I'm with Arm73 on this one. Try to get to a friend or family members house who has an active internet connection and get the thing updated. I do think the whole day 1 update is crap and Nintendo should be ashamed of themselves for not getting everything in order before launch.
It doesn't use DVD's.