I was going through the official patches for NBA 2K10, NBA 2K11, and NBA 2K12 in our Downloads section over the weekend, and I noticed that the links for the NBA 2K12 patches weren't working. I've re-uploaded them for safekeeping, so all the links should be working fine now. If you need them, here they are:
NBA 2K12 Official PC Patch (North America)
NBA 2K12 Official PC Patch (Europe/International)
NBA 2K12 Official PC Patch (China)
NBA 2K12 Official PC Patch (Japan)
A few other official downloads can also be found in that section, including the final official roster for PC: downloads.php?cat=144