Download macOS Sonoma from the Mac App Store [Install macOS Sonoma.app] is Easy on any Mac Desktop or MacBook, Once you update Mac, the company doesn’t allow you to downgrade the system software. If you’ve updated your Mac to macOS Sequoia, you won’t be able to access the previous macOS file through the Mac App Store. This means that once you’ve updated your MacBook or Mac, there’s no way to revert to the earlier version. However, there is a method for downloading the latest macOS version while still being able to use the previous version on your MacBook or Mac.
Apple has discontinued support for newer macOS updates on some Mac models. Conversely, many users who can update their macOS are interested in downgrading. Below, we will explore how to download an earlier version of macOS on the latest macOS without wasting your time.
Steps to Download an Earlier MacOS From the App Store

Step #1: You cannot download earlier macOS Sonoma from the Mac App Store once you have installed macOS Catalina or later, so click on this Link to
Download macOS Sonoma,
Download macOS Ventura,
Download macOS Monterey,
Download macOS Catalina,
Download macOS Mojave. [Open this link on Safari Web Browser]

Step #2: Upon redirecting to the Mac App Store, wait a few seconds and click on “Get” and download macOS Sonoma.

Step #3: Confirm, “Download,” and it will download only at first on Mac.
Step #4: You can find the Install macOS Sonoma file in the “Applications” folder of your Mac.
Step #5: If you try to open the macOS Sonoma installer on the Mac, it will show an error like “This copy of the “Install macOS” application is too old to be opened on this version of macOS”. Since you have installed the macOS Catalina.
Step #6: To overcome this error and install macOS, you will need to create Bootable Drive. This is used to downgrade macOS or install macOS on another Partition on the same Mac.
Open Finder on Mac, Click on Applications from the sidebar, and here’s install macOS sonoma.app file around 6 gigabytes in size.
Video Tutorial on getting an Earlier Version of MacOS to download on any Mac, MacBook
What If I want to downgrade macOS Big Sur to macOS Catalina?
- How to Downgrade macOS Sonoma to Ventura
- How to Downgrade macOS Ventura to macOS Monterey
- How to Downgrade macOS Big Sur to macOS Catalina
- How to downgrade macOS Catalina to macOS Mojave.
Just like we have shown you can download macOS Big Sur on macOS Catalina, you can also downgrade the macOS Catalina with perfect procedure. Once the macOS Mojave installer is downloaded on a Mac, you must create a bootable USB drive. Specifically, you can check this,
What if I want to use both macOS Sonoma and macOS Ventura?
Dual Boot Mac: Install Two Different MacOS on Different Partition!
Yes, using both macOS Sonoma and macOS Ventura in a single system is possible. But you have to create a new partition on the Mac and then install the macOS on the Mac. We have made a separate article on how to dual boot Mac and install two different macOS on Mac. Though a new partition you have to create, there will be no data loss or any harm to the system. Switch anytime between macOS Monterey and macOS, in a minute or two.
Moreover, when you install the latest macOS version, some of the applications we use daily may not work properly. In such cases, you can switch back to macOS Monterey and continue working uninterrupted.