How to get an Update.
I am an OS X user (Not sure which version...Maybe EL Captian.) and when I go to the app store and try to update it says Its fully updated, but it says its only on 10.11.6 "theres no updates available"when I try to. And I'd like to update to 10.12.6 but it won't let me.
iMac, Not sure of the Operating system