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how to upgrade mac 10.8.5 to mountain lion

I have mac 10.8.5. I use Firefox and it says my system cannot be updated anymore. How do I upgrade my computer?

iMac, Mac OS X (10.5.8)

Posted on Nov 13, 2012 7:16 AM

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2 replies

Nov 13, 2012 7:24 AM in response to farmergal

The most recent update for OS X Mountain Lion is 10.8.2. I have no idea what you are referring to a "mac 10.8.5" as that is neither a valid OS X release number (yet) nor does it seem to be a firmware number. Your profile says you have an iMac running 10.5.8??


Exactly what model of Apple computer are you using, and what version of OS X is it running?


If you are running an iMac older than a mid-2007 model it cannot run OS X 10.8 (see http://support.apple.com/kb/HT5444).

Nov 13, 2012 7:25 AM in response to farmergal

You'll need a lot more detail on which model iMac you have and its specifications, but that's all outlined in the link below:


Kappy 08/2012 post on upgrading to Snow Leopard, then Lion or Mountain Lion - https://discussions.apple.com/thread/4246342?answerId=19401628022#19401628022 - including how to get Snow Leopard and Lion since Apple removed them from the online store.

how to upgrade mac 10.8.5 to mountain lion

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