I'm getting the error message, "Mac OS could not be installed on your computer. The source contains newer release of Mac OS. Your Mac requires an upgrade before you can migrate from the source." I have no idea what this means. I'm trying to do a security update with Catalina and It won't let me. I have a MacBook Pro 13 2012 model.
Mac Pro
Judging from the contents of the Security Update 2021-007 - well worthwhile exploring other methods to get it installed.
Get Support Choose a product and we’ll find you the best solution with Apple Support
Install from Safe Mode - restart and immediately hold the SHIFT key. Loads slowly - normal.
Download from here https://support.apple.com/en_CA/downloads
Tried it, unfortunately I’m getting the same error message. When this update was available a couple of weeks ago, there was also a Safari update. Does it matter if I just updated the Safari but not the Catalina security update?
Ok. Thanks. Hey, about a year ago, I was having the same error message on an update and it locked me out of my DJ software which is called Rekordbox. I had to take it to the Apple Store and they were forced to wipe it clean and restore from an older Time Machine backup. I never did this security update for Catalina, for fears I would have the same issue with my DJ software. Now, when the compatibility issue was solved with my DJ software, I attempted to update my Catalina. Hope this helps.
To install the Security update for Catalina macOS 10.15 requires Catalina be already installed on the computer now.
" About this Mac" and a Screen Shot may answer this question.
Already installed. Version 10.15.7.
Only that is leaving the entire System open to whatever it is supposed to fix.
Ok. What now?
Honestly - never encounter such an issue as you.
Need time to think on this one.
The message Mac OS could not be installed on your computer, keeps popping up.
