New software upgrade for mac0S High Sierra

I have MacOS High Sierra , Mac book air 2017. My ask is my current soft ware version is 10.13.6. I don't see any new version on my settings. how do I get new latest version . Please help am unable to use my mail and other apps

MacBook Air 13″, macOS 10.13

Posted on Dec 11, 2025 7:04 PM

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4 replies

Dec 12, 2025 8:18 AM in response to kar79ask

Before you upgrade from High Sierra to Monterey, you might consider installing the free Go64 application that will list all 32-bit applications and library dependencies you currently have installed. These are not supported, or will require product upgrades with macOS Catalina or later.


Next, perform a last Time Machine backup of your High Sierra installation and then eject that drive and set it aside labeling it with the backup date/time and High Sierra 10.13.6. You should use a new Time Machine drive formatted as APFS via Disk Utility for Time Machine backups after the operating system upgrade. Time Machine will expect this formatting. You will need to assist Time Machine in recognizing this new backup drive.


After upgrading to Monterey, the first launch of Apple Mail will automatically migrate your email to the version of Mail in Monterey. This is usually seamless.


You should also install the current Firefox or Brave browser after the upgrade to maintain security currency with websites. Safari will be current enough at this point.

New software upgrade for mac0S High Sierra

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