Download Sequoia older version for a different Mac

My wife's M4 mini was destroyed by the last update. I would like to go backwards. I have a timemachine back up made on that computer which now says I do not have permission. I am able to open that very version of Time Machine back up with my M2 mini.

I want to go backwards to 15.2. How do I find legacy installers? 2 attempts to download the 15.4 get installer errors,

Does anyone know where the older versions of MacOS Sequoia installers are located?

[Edited by Moderator]

Mac mini (M4)

Posted on Apr 7, 2025 3:38 AM

18 replies

Mindzman Author

Level 1

81 points

Apr 7, 2025 1:32 PM in response to Techy-smarts

A) we have a Time Machine back up of the disk

B) the current OS broke the machine

Mindzman Author

Level 1

81 points

Apr 7, 2025 1:34 PM in response to Owl-53

false.

My wife codes in SWIFT and Xcode.

She had this particular computer down to zero and built it back up.

Apr 7, 2025 3:14 PM in response to Techy-smarts

It is not supported nor recommended and it is high risk if you do attempt it.

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Download Sequoia older version for a different Mac