While Overbridge 2.0.53 will also install on earlier versions of macOS, it will basically be the same as the latest stable version. We recommend using the latest stable version, Overbridge 2.0.47, if you are using an earlier macOS, such as macOS Catalina, Mojave, High Sierra, or Sierra. This public beta test is for macOS Big Sur only. The new firmware versions will work with Overbridge 2.0.47 as well as with Overbridge 2.0.53.