Quote:
Originally Posted by BScout
It is legit. There's a massive firmware update to go up to High Sierra. It's also one of the longest macOS installs. Don't panic and just wait it out when it is doing the install -- takes forever.
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Thanks for that bit of help. I asked because it just wanted to do the firmware update with no explanation as to why or what would happen or what exactly the firmware update was about. So I stopped things until I could get more info.