Choose "Restart" from the Apple () menu.On the menu bar, select either "Install macOS Sierra" or "Install macOS High Sierra", then select "Quit install macOS" Otherwise, the image below will be displayed. If your Mac can install Sierra, then the image below will be displayed. Select, "Reinstall macOS", then select the "Continue" button. Eventually, you should get the image shown below. This will allow you boot to macOS Recovery over the internet. Restart your Mac and hold down the Shift+ Option+ ⌘(Command)+ R. Just because your Mac came with High Sierra does not mean the firmware will not allow you to download and install Sierra. As I said, I find it very difficult to accept that I've purchased a piece of hardware which I won't let me use it the way I want to use it.Īccording to the website, all 2017 MacBook Pro models were pre-installed with macOS 10.12.5 (Sierra). In regards to the duplicate flag, I had read all of the referenced articles before posting, but asked this anyway because I wanted to know if it was possible to circumvent the protection. My rant aside, does anyone have any insight on a method to get around this restriction? For what they charge for hardware, I should be able to do whatever I want to this machine. I know Apple is "Big Brother-ish", but this obnoxious. I also really don't like the idea that I've purchased hardware which doesn't allow me to install the software I actually want. I'm not willing to put High Sierra on my network yet, it doesn't play nice with profile management or Munki. I imagine it's just a piece of information somewhere with a version check, if I could find that file maybe I could lower the minimum version? ![]() I wish I knew how Apple was able to perform this restriction. I'm now thinking of trying to clone the hard drive from the other MBP I have that's running Sierra onto the new one. I've tried to sidestep it a few ways, none of which have worked. Is there any way to force this laptop to boot into a bootable Sierra install USB drive so I can perform the downgrade? I can't even get this laptop to boot from a live Linux USB, I just get a giant "No" icon. The explanation I found is that the drivers don't exist, but I know for a fact that the drivers exist since there is another MBP at my company shipped just a few months prior with the same specs, running Sierra. I'd like to downgrade to Sierra but am running into the issue that you can't install a version of the OS lower than what was shipped. New MBP purchase shipped with High Sierra.
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