[musicman691]

Originally Posted by Goobs

You can get a full 10.13.6 installer here: https://itunes.apple.com/us/app/maco...741?ls=1&mt=12

When I try and download it on my 5,1 2012 cheesegrater currently running Sierra 10.12.6 it says it needs to update my firmware before continuing with the download. Is this legit or what? I ask because I have no idea what that update would update.