How to Download MacOS Big Sur 11.6 Updateīefore updating, backup the Mac with Time Machine. Failure to backup could lead to data loss.Go to the  Apple menu, then choose “System Preferences”.

Choose to “Update Now” for macOS Big Sur 11.6.Mac users running Catalina or Mojave will find security updates available instead, available as Safari 14.1.2, and Security Update 2021-005 Catalina.ĭespite being apparently a small security update release, MacOS Big Sur 11.6 is a rather large download, weighing around 2.6GB and 3.8GB, depending on the target Mac. The Mac must reboot to complete installation. Downloading a Full MacOS Big Sur 11.6 Installer File Users can also choose to download a complete macOS 11.6 installer package file if desired. This may be useful if you’re updating several Macs on a network, if you don’t want to have to re-download the installer multiple times. If you notice anything different, noteworthy, or interesting in macOS Big Sur 11.6, let us know! This update is recommended for all users and improves the security of macOS.įor more information on the security content of this update see Release notes accompanying macOS Big Sur 11.6 are quite brief, as has been the norm lately: The installer pkg file for 11.6 will place the “Install macOS Big Sur.app” for 11.6 into your Applications folder. WARNING: if you attempt to upgrade from macOS Mojave to macOS Big Sur your Mac has a high likelihood of becoming useless and losing all data. When this happens the update hangs with the progress bar, often for many hours with no forward motion, the update is effectively bricked the Mac. I repeat, DO NOT ATTEMPT TO UPDATE FROM MACOS MOJAVE TO BIG SUR or you may lose all your data.

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