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)
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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