How can I install the most recent version of OS X?
From the Apple () menu, choose Software Update. Install any updates related to OS X. See this article for more information.
How can I tell if I have the most current software installed already?
- From the Apple () menu, choose About this Mac.
- If you see OS X Version 10.8.1 or 10.8.2, your computer has not been updated and you should install the latest updates from Software Update as explained above, or downloading the updates here.