Why does my new logic board only accept OS X Yosemite?
My hard drive uses the MacOS Journaled format.
I put in a new logic board and every time I try to install High Sierra from a USB key , the installation goes as planned until it reboots.
The problem is that the computer keeps rebooting indefinitely after a minute or so.
I used internet recovery and it downloaded Yosemite (!).
I guess it’s a matter of firmware, isn’t it?
But it seems the only way to update the firmware is to install High Sierra, which the logic board doesn’t let me do.
Is there a way I can solve this?