Sierra to High Sierra
I thought I had kept my MacBook up to date but had kind of stopped paying attention to it after I got my MacAir. Apparently it's only updated to Sierra. I downloaded and tried to install High Sierra and it tells me I need a 10.13 update which doesn't exist. I did see another thread about an update but the person kept referring to a High Sierra link which is the one I used to download, so please don't just drop that link and think that's helpful. I'm not super technical so I guess I need whatever fix to this issue explained to me as if I am not an employee at the Genius bar that has uninstalled and reinstalled things thousands of times.
I really do appreciate any help I can get with this. My Mac still runs wonderfully, I just need it updated.
MacBook Pro 15″, macOS 10.12