The "Universal Control 3.1.2 Milestone Release Notes" of 11/19/19 say:
Universal Control 1.7.6 for FireWire products (including the StudioLive 16.0.2 Classic) still works onWindows 7, 8.1, and 10, as well as Mac OS X 10.8.5—macOS 10.14 Mojave. However, it will not beavailable on macOS 10.15 Catalina or future macOS versions. Users of these products are advised notto update their systems beyond macOS 10.14 Mojave.
●StudioLive 1602 Classic
It always makes sense to check release notes of software/firmware, especially when using a discontinued product. The Download Page is a great help to find the information needed.