Downgrade from macOS Monterey to Big Sur or Catalina on Intel and M1 Macs!

Did you update to macOS Monterey and now need to downgrade to Big Sur or Catalina on your Intel or M1 Mac? I'll show you the easiest and fastest way to downgrade to a previous version! I will walk you through erasing your drive and reinstalling macOS Big Sur or Catalina.

I cover all macOS Monterey Supported Intel Macs including 2013-2015, 2016-2017 T1 and 2018-2020 T2.

Also included is all Apple Silicon M1 Macs!

Compatible Intel
2017 iMac Pro
2015-2020 iMac
2015 MacBook Pro 13" & 15"
2015 MacBook Air
2014 Mac Mini
2013 & 2019 Mac Pro

Compatible M1 Apple Silicon Mac
ALL OF THEM!

Create a macOS Big Sur USB Install Disk
https://www.youtube.com/watch?v=dQCp-rQlZuY

How to download macOS Big Sur
https://mrmacintosh.com/macos-big-sur-full-installer-database-download-directly-from-apple/

Downgrade from macOS Monterey to Big Sur or Catalina on Intel and M1 Macs!

0:00 Intro
0:40 First thing we need is a Big Sur USB Installer
1:17 Talking about the prerequisites for getting started on Intel and M1
2:32 Starting downgrade on an Intel Mac
3:30 Have a 2018-2020 T2 Intel Mac? You need to Enable External USB Boot
4:15 Booting to Intel Recovery with Big Sur USB Installer
5:01 Erase the disk before install on Intel Mac
5:35 Start Big Sur Install on Intel Mac
6:10 Starting downgrade on M1 Apple Silicon Mac

Can your Mac run macOS Monterey? + Unsupported Patcher news!
https://youtu.be/dfU1JDbue2o
https://mrmacintosh.com/macos-12-requirements-full-list-of-compatible-mac-computers/

How to Downgrade from macOS Monterey to Big Sur or Catalina
https://youtu.be/Ae_Vm39dxrA

How to install macOS Monterey on your Unsupported Mac with OpenCore Legacy Patcher!!!
https://youtu.be/UE8JEKHpp5c

macOS Monterey [FACTORY ERASE NEW FEATURE] “Erase all Content & Settings” RESET MAC IN ONLY 2 MIN!!!
https://youtu.be/O882iWxtZyo

How to Enroll your Mac into macOS Monterey Developer Beta in 2 MIN!
https://youtu.be/6dEvdtxvb64
https://mrmacintosh.com/how-to-enroll-your-mac-into-beta-with-seedutil-macos-monterey/

How to create a macOS Monterey Beta USB Installer Disk in only 5 MIN!
https://youtu.be/9444L9xW6kY
https://mrmacintosh.com/how-to-create-a-bootable-macos-12-beta-usb-drive-in-5-min/

How to download macOS 12 Monterey the EASY WAY IN ONE CLICK!
https://youtu.be/6dEvdtxvb64
https://mrmacintosh.com/macos-12-monterey-full-installer-database-download-directly-from-apple/

This database will contain download links for macOS 12 full Installer pkg files (InstallAssistant.pkg). This file is the same full installer that you would download directly from the App Store for Intel and Apple Silicon M1 Mac Computers. The InstallAssistant.pkg is stored on Apple's servers and contains the full "Install macOS.app". Once downloaded, all you need to do is install the pkg and the full installer of macOS will be in your applications folder. This change was made when Apple revised the full installer for Big Sur. The InstallAssistant.pkg is not available for Catalina or Mojave.

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Links
https://MrMacintosh.com - Apple Mac Enterprise IT Blog & macOS News for MacAdmins

Twitter
https://twitter.com/ClassicII_MrMac

Mac Transition to Apple Silicon Everything you need to know!
https://mrmacintosh.com/mac-transition-to-apple-silicon-everything-you-need-to-know-updated/

New Article How to reinstall macOS on your Apple Silicon Mac
mrmacintosh.com/how-to-reinstall-macos-on-your-apple-silicon-mac-everything-you-need-to-know/

macOS ISPW Firmware Database - Download Full macOS ISPW Files!
https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/

Download macOS Big Sur Full Installers via InstallAssistant.pkg
https://mrmacintosh.com/macos-big-sur-full-installer-database-download-directly-from-apple/

macOS Updates Database! – OS, Xprotect & App Version Database
https://mrmacintosh.com/macos-system-status-version-info-for-macadmins/

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