Hello,
Since I've upgraded my Mac mini M1 to macOS 26, I can no longer use my TV as an external monitor.
Is there a step-by-step procedure to downgrade from mac OS 26.0.2 back to macOS 15?
Thank you!
Mac mini, macOS 26.0
You can’t ‘downgrade’ you must completely erase your internal drive, install the older macOS, then restore from a backup made before you upgraded. A backup made now won’t work, though you can manually copy your data off then back (but you’ll lose all your settings, etc).
The article relates to macOS 14 Sonoma , though the steps would be the same if going macOS 26 Tahoe to macOS ??
https://eclecticlight.co/2023/09/30/how-to-clean-install-modern-macos/
Lots of sites with different articles on the subject.
https://www.google.com/search?q=downgrade+to+Sequoia+from+Taho%2BApple+Help&ie=UTF-8
I've downgraded my Mac mini to macOS Sequoia, and I'm now able to use my LG TV as an external monitor once again.
Thank you, neuroanatomist and AlWeir, for your help!
Is there a step-by-step procedure to downgrade from macOS 26.0.2 back to 15.x?
