- Download the full installer:
softwareupdate --list-full-installers
Finding available software
Software Update found the following full installers:
* Title: macOS Ventura, Version: 13.1, Size: 11931164KiB, Build: 22C65
* Title: macOS Ventura, Version: 13.0.1, Size: 11866460KiB, Build: 22A400
* Title: macOS Ventura, Version: 13.0, Size: 11866804KiB, Build: 22A380
* Title: macOS Monterey, Version: 12.6.2, Size: 12104568KiB, Build: 21G320
* Title: macOS Monterey, Version: 12.6.1, Size: 12108491KiB, Build: 21G217
* Title: macOS Monterey, Version: 12.6, Size: 12104042KiB, Build: 21G115
* Title: macOS Big Sur, Version: 11.7.2, Size: 12119307KiB, Build: 20G1020
* Title: macOS Big Sur, Version: 11.7.1, Size: 12119247KiB, Build: 20G918
* Title: macOS Big Sur, Version: 11.7, Size: 12118755KiB, Build: 20G817
* Title: macOS Big Sur, Version: 11.6.6, Size: 12121263KiB, Build: 20G624
* Title: macOS Big Sur, Version: 11.6.5, Size: 12121404KiB, Build: 20G527
* Title: macOS Big Sur, Version: 11.6.4, Size: 12147782KiB, Build: 20G417
* Title: macOS Big Sur, Version: 11.6.3, Size: 12143674KiB, Build: 20G415
* Title: macOS Big Sur, Version: 11.6.2, Size: 12141944KiB, Build: 20G314
* Title: macOS Big Sur, Version: 11.6.1, Size: 12137180KiB, Build: 20G224
* Title: macOS Big Sur, Version: 11.5.2, Size: 12149332KiB, Build: 20G95
* Title: macOS Catalina, Version: 10.15.7, Size: 8055650KiB, Build: 19H15
* Title: macOS Catalina, Version: 10.15.7, Size: 8055522KiB, Build: 19H2
* Title: macOS Catalina, Version: 10.15.6, Size: 8055450KiB, Build: 19G2021
* Title: macOS Mojave, Version: 10.14.6, Size: 5896894KiB, Build: 18G103
* Title: macOS High Sierra, Version: 10.13.6, Size: 5099306KiB, Build: 17G66
softwareupdate --fetch-full-installer --full-installer-version 12.6.2
-
Or use Mist or sus-inspector
-
For MacPro5,1 use this:
softwareupdate --fetch-full-installer --full-installer-version 10.14.6
cp /Applications/Install\ macOS\ Mojave.app/Contents/Resources/Firmware/MP51.fd ~/Desktop
- Catalina use the latest security update
- Mojave use the latest security update
- High Sierra use the latest security update
pkgutil --expand [Double click the dmg file and drop file here] /destination/path/
pkgutil --expand /Volumes/macOS\ Catalina\ Security\ Update\ 2021-008/SecUpd2021-008Catalina.pkg ~/Desktop/Expanded
cp ~/Desktop/Expanded/FirmwareUpdate.pkg/Scripts/Tools/EFIPayloads/MM61.scap ~/Desktop/MM61.scap
Please check here for the latest firmware version and the latest full installer version or latest security update.
- Mounting Big Sur SharedSupport disk image:
/usr/bin/hdiutil mount /Applications/Install\ macOS\ Big\ Sur*.app/Contents/SharedSupport/SharedSupport.dmg
- Store ZIP file path to variable (handle unpredictable file name)
ZIP_FILE=`ls /Volumes/Shared\ Support/com_apple_MobileAsset_MacSoftwareUpdate/*.zip`
- List firmware files in ZIP file:
unzip -l-qq "$ZIP_FILE" "AssetData/boot/EFI/EFIPayloads/*"
- In Terminal.app, first verify your EFI version using the following command:
/usr/libexec/firmwarecheckers/eficheck/eficheck --integrity-check | grep "EFI Version"
-
Note:
macOS Sonoma
no longer prifides theeficheck
utility. That has been removed fromSonoma
. All T2 and Apple silicon models automatically check the integrity of their firmware in the early part of the boot process anyway. -
locate the firmware file and store the exact file path into the variable FIRMWARE_FILE:
FIRMWARE_FILE=<firmware file path here>
- An example command would be:
FIRMWARE_FILE=AssetData/boot/EFI/EFIPayloads/MBP112.scap
- Extract the firmware file ( "-j" means don't create directory structure and "-d" designates that output directory):
unzip -j "$ZIP_FILE" $FIRMWARE_FILE -d ~/Desktop/
- Set your MacBook to upgrade the firmware on the next bootup (SIP must be disabled). Fill in the file name of your specific firmware file:
sudo /usr/sbin/bless -firmware ~/Desktop/<firmware file name here> --verbose --recovery
- Trigger firmware upgrade: Shut down your computer. (Do not choose the restart option!) After the MacBook is powered off, power it back on by pressing the power button. Next be patient, and if everything goes well your firmware will be updated.
Thanks for the help! It seems it worked but right at the end it looks like something went wrong.
Temp@Devins-iMac ~ % sudo /usr/sbin/bless -firmware ~/Desktop/IM131.scap --verbose --recovery
Password:
EFI found at IODeviceTree:/efi
Will need to copy 8458240 bytes to EFI system partition
No auxiliary booter partition required
System partition found
Returning booter information dictionary:
{
"Auxiliary Partitions" = (
);
"Data Partitions" = (
disk3s5
);
"Preboot Volumes" = (
disk3s2
);
"System Partitions" = (
disk1s1
);
}
No appropriate ESP could be found
Error while writing firmware updater for EFI
Temp@Devins-iMac ~ %
Any ideas what's happening here?
I looked it up and it seems maybe the issue is I'm booting off external drive? Problem is my internal Hard drive is completely dead. looks like I'm destined to never get this firmware up to date .