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Then go to the Use Safari to download macOS section and click on the OS you want to install.īefore upgrading make a full back up of your Mac.Ĭheck that third party apps you use have updates available for the new OS.Ĭheck that your printers/ scanners etc have updated drivers and software available for the new OS.Ĭonnect your mac to your router via cable rather than rely on WiFi.ĭo not use your mac while it is downloadingĪnd do not use any other devices that share the same internet connection. Go to Check Compatibility to see if your mac qualifies for the OS upgrade you want. MacOs Big Sur 11.6 or the latest macOS Monterey 12.0 I would recommend you upgrade toįor High Sierra, Mojave, Catalina or Big Sur, If you find your mac can upgrade to the newer OS's like macOS Mojave 10.14, macOS Catalina 10.15, Which OS you can upgrade to will be governed by which model and year your mac is.Ĭlick on the  top left of your screen click on About This Mac to find out the year of your mac.