
The InstallAssistant.pkg includes the entire Install macOS Big Sur.app. There might be old copies of Lion, Mountain Lion, and even Snow Leopard for sale on sites like eBay. You can download the full installer of macOS Big Sur from Apple’s own software update servers.

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. Follow the steps in the section above to. (Use Safari, close the Mac App Store app first). If you have a valid Apple Developer account, you might be able to download older versions from /downloads. How to download High Sierra It is also possible to download High Sierra via this link.

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 Once any of these downloads finishes, do not open the installer to begin the installation.

Mac App Store Links for Older macOS Downloads
