I need to keep using Sierra because the legacy software Final Cut Pro 7 doesn't work on High Sierra.
(I need this software for one really old project that I can't convert to DaVinci Resolve yet)
So I want to keep Sierra but upgrade to the latest firmware. How can I check to see what the latest firmware is and how to upgrade?
I'm usually on the Mac Pro forum and it's really simple to upgrade the firmware there but I haven't done it on a MacBook Pro before.