Unable to update to Monterey - A required firmware update could not be installed
Hi
I hope someone here can help. I have an Apple MacBook Air "Core i7" 2.2 13" (Early 2015) that is currently running Big Sur and I am trying to get updated to Monterey, but I am not having any success.
This shows details of my machine for info:
No matter what I try to install Monterey I get a black mocOS Update Assistant screen with a yellow warning triangle with the message "A required firmware update could not be installed."
A summary of things I have tried....
1) Update Monterey from Big Sur after the installer seems to be going fine I then get the message 'A required firmware update could not be installed'
2) Erase disk using Disk Utility (I have tried multiple times erasing to both APFS and Mac OS Extended (Journaled)) from a bootable USB of Monterey after the installer seems to be going fine I then get the message 'A required firmware update could not be installed'
3) Erase disk using Disk Utility (I have tried multiple times erasing to both APFS and Mac OS Extended (Journaled)) from a bootable USB of Big Sur. This installed Big Sur without any issues on both file system formats. However I then tried updating to Monterey via a bootable USB of Monterey and get the message 'A required firmware update could not be installed'
4) I have even tried swapping out the NVMe SSD for a brand new WD SN550 as a sort of last resort feeling the drive may be dying. After repeating 2) and 3) I get the same message 'A required firmware update could not be installed'
After spending far too many hours on the internet looking how to resolve this, I need help!!
I understand that Apple now send firmware updates out via the OS updates and basically the message is telling me that a firmware is needing to be updated on the MacBook Air for Monterey to be installed, but that for whatever reason this coudnt happen.
From system information, this is details of my firmware:
Somewhere I came across said to check the integrity of the EFI so I followed the instructions and this is the output:
I understand that the last portion of the EFI Version is the date... [20]18-02-27 09:37
I havent been able to find out if this is out of date or what the right version number should be, but it does sound to be old if its from 2018.
I then found another post advising how I could manually update the firmware by extracting the MBA71.fd file (in my instance for my MacBook Air) from the Monterey installation media and then running a terminal command on my working Big Sur installation. Per the instructions I disabled SIP using the recovery terminal then ran the command and the output from that is attached.
Per the instructions I turned off the Mac then turned it back on. The progress bar did take longer (the instructions said it would) and then I got the log in screen. I logged back in and checked System Information however the version has not changed.
I have tried updating to Monterey again just ins case but it came up with the same message 'A required firmware update could not be installed'
Lastly I tried SilentKnight app to confirm the details and this is what this shows:
Any assistance would be gratefully received as I want to get this upgraded and cant continue to spend hours wasting my time :-)
Cheers
MacBook Air
