![]() This version of El Capitan can also be installed on Mac computers that are not compatible with High Sierra. There might be old copies of Lion, Mountain Lion, and even Snow Leopard for sale on sites like eBay. If you are running Snow Leopard or Lion and would like to upgrade to High Sierra, you need to install El Capitan first. Non-developers can buy OS X Mountain Lion ($19.99) and OS X Lion ($19.99) from Apple directly. Apple will email you an unlock code, which you can redeem in the Mac App Store. If you have a valid Apple Developer account, you might be able to download older versions from /downloads. This will put an installation app in your Applications folder, which you should leave there. Once any of these downloads are complete, mount the. Leave the installation app in your Applications folder.ĭirect Disk Image Links for Older macOS Downloads Other Not enough details Hard to understand Submit More from Lifewire Can I Upgrade or Downgrade to Snow Leopard (OS X 10.6) How to Update Your MacBook Pro. Once any of these downloads finishes, do not open the installer to begin the installation. ![]() Mac App Store Links for Older macOS Downloads
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