How to Install Patches:
To install patches, All you need to do is go to your NBA 2K12 main folder and replace all the files.

    How to Find NBA 2K12 Main Folder:
    1. Right click NBA 2K12 desktop game shortcut.
    2. Select "Properties".

    3. Click "Open File Location".

    4. Paste the files from the patch inside the main folder.
(This is the game main folder)
or you can just go to:
    DVD version: C:\Program Files\2K Sports\NBA 2K12
    Steam version: C:\Program Files\Steam\steamapps\common\nba 2k12
and paste the files inside the main folder.

NOTE: Don't forget to make a back up of the original file before replacing files.