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  • Tips: How to download an old macOS installer

    Home » Forums » AskWoody support » Non-Windows operating systems » macOS » Tips: How to download an old macOS installer


    …Unfortunately, that handy pile of macOS installers you collected on that old external drive became worthless on October 24, 2019.

    As of that date, any old macOS you still have copies for, will not run. You can’t install macOS from them because the security certificates on them expired back then.

    However, any old macOS installer that you can download from Apple now will work. And as the yearly release cycle ticks on by, we’re already at the stage where the last four releases are available to download…

    it’s easy to end up with old Macs that are working perfectly well, yet could be updated a little. Not all the way to Monterey or even Big Sur, but perhaps to High Sierra, maybe El Capitan, conceivably Mojave…

    These links will bring you to a download page.

    macOS Big Sur version 11
    macOS Catalina 10.15
    macOS Mojave 10.14
    macOS High Sierra 10.13
    Choose from the following to get the official macOS update and directly from Apple. Clicking through will start the download.

    macOS 10.10 Yosemite
    macOS 10.11 El Capitan
    macOS 10.12 Sierra..

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