How to downgrade from Sonoma to Monterey on a macmini 2018
Downgrade has to be performed on a macmini 2018 (chip T2 inside)
Mac mini, macOS 10.14
Downgrade has to be performed on a macmini 2018 (chip T2 inside)
Mac mini, macOS 10.14
One very Important factor missing from a previous suggestion
The computer has a T2 Chip >>
Link below
About Startup Security Utility on a Mac with the Apple T2 Security Chip
Without changing the Startup Security Setting Before your Wipe the drive.
The computer Will Not be able to Boot- Up from the Bootable Installer USB Drive
Mac computers with the Apple T2 Security Chip
One very Important factor missing from a previous suggestion
The computer has a T2 Chip >>
Link below
About Startup Security Utility on a Mac with the Apple T2 Security Chip
Without changing the Startup Security Setting Before your Wipe the drive.
The computer Will Not be able to Boot- Up from the Bootable Installer USB Drive
Mac computers with the Apple T2 Security Chip
First, back up data on your Mac. Then, download Monterey install app from App store and make a bootable USB with it.
After that, boot your Mac into Recovery mode and erase the disk with Disk Utility app. After that, reboot your Mac from USB and start installing Monterey.
How to downgrade from Sonoma to Monterey on a macmini 2018