IIRC, I believe I got my patch from the California site on
3DGamers.com (I didn't have any luck with Virginia or Indiana).
There have been quite a few reports of problematic downloads from host sites, so you may want to check a few file hosts by doing a search on Google, if none of the servers for 3DGamers pan out.
It's a huge patch, but a worthwhile and necessary one. The game loads faster, shots are more accurately registered, no lockups when a campaign is completed while you're in a vehicle, etc. I'm replaying the single player campaign to earn more medals for accuracy and kills registered.