"To install macOS High Sierra, a firmware update is required."

I have a mid-2010 MacPro. I'm trying to install High Sierra, but I keep getting this message: "To install macOS High Sierra, a firmware update is required." I can't find any firmware updates. I've tried holding the start button down several times, but I still get the message.User uploaded file

Mac Pro, macOS Sierra (10.12.6), MacPro 5,1, with 2.8GHz quad-core

Posted on Sep 25, 2017 5:38 PM

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Posted on Oct 14, 2017 11:49 PM

Hi - I have the same model Mac Pro (mid-2010, 2.8 GHz Quad) and was having similar issues - but you might want to try the following:


In the instructions in the screen shot you posted, it tells you to hold down the power button until the power indicator light flashes OR you hear a long tone.


The first time I attempted the update I held down the button until the power light flashed and then let go. The long tone happened after I let go of the button and I got a normal looking startup screen (grey Apple logo with black status bar).

Upon restart, I was just taken to the same screen advising me that I needed to update the firmware.


The second time I attempted the update, I kept my finger on the power button past the flashing power light and until the long tone sounded. Only then did I let go of the button.


This time a different (old school/low res) startup screen showed up where both the Apple logo and the status bar were grey. The SuperDrive tray opened, the status bar went to completion and the SuperDrive tray closed itself again.


When the machine restarted it took me to the screen where I could proceed to install High Sierra, which happened successfully.


I'm not sure of the technical reason why this worked, but it did. Hope it helps you too.

66 replies

Oct 9, 2017 1:17 AM in response to scoogy2

A new feature of macOS High Sierra is to programmatically check for firmware update. This is related to the fact that EFI could be one point of weakness that could possibly lead to compromise the entire computer.


If you are interested on the argument you can read here.

You can also check if EFI firmware for your MacPro is the latest available, running this little program developed by the Duo Labs guys.


Back to your issue. Have you tried running High Sierra installation without the internet connection?

Sep 26, 2017 6:33 PM in response to scoogy2

I have the exact same computer, Mac Pro mid 2010. I currently have no OS installed on it so I created a bootable USB drive using the High Sierra installer that I downloaded from my MacBook mid 2010, I then booted to the installer and then chose the drive I wanted to install on, but directly after that I was greeted with the exact same message, but for me the 'Shut Down' button is grayed out so I can't select it. To get around that I used the 'Shut Down' from the drop down menu in the top left of the screen that you get from clicking the Apple logo. I followed the instructions and held the power button until I heard the long beep, after that it the Apple logo appeared along with the loading bar, once that completed it booted back into the installer and I got the exact same message.... I did this two more times and still no luck. At first I thought I was all alone on this issue, but I see it now that others have it too. Hopefully a solution will come soon.

Best of luck!

Sep 27, 2017 7:03 AM in response to Dogcow-Moof

Well, when I did shut down by using the drop down menu it did seem like it applied the update since I heard the tone and everything, but maybe not. Weird thing is though, it simply won't let me click the shut down button thats inside the window. Also when I do click the shut down button thats in the window, the little spinning ball appears and then nothing happens, I've given it quite awhile too and it just never did anything.

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"To install macOS High Sierra, a firmware update is required."

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