How to revert macOS to the previous version

There are several reasons why you might want to revert to an older version of macOS than the version currently installed on a Mac. Here's how to do it.A macOS installation can be reverted to an earlier release. Apple updates macOS, the operating system for Macs, once a year. Each successive year brings a new version of macOS with refinements, new features, and compatibility updates.For a variety of reasons, you might find the need to revert to an older version of macOS. You might need an older version of macOS for compatibility reasons, such as to open older files. If you are a developer, it could be to test your software with an older version. Continue Reading on AppleInsider | Discuss on our Forums