Have IMAC 21.5" made late 2011. Have os x 10.9.5 now and need to know how to update
How can I update my IMAC? Everytime i try it says "cannot be installed on this computer"
iMac Line (2012 and Later)
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Back up your data, check your applications for compatibility, and download High Sierra. That Mac model can't be upgraded past it.
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