Update maps and software, sync with Garmin Connect and register your device
To manually install Garmin Express with Homebrew, use the following command:
Current version of #: 7.18.0
ARM: https://download.garmin.com/omt/express/GarminExpress_7.18.0_OS10x.dmg
Intel: https://download.garmin.com/omt/express/GarminExpress_7.18.0_OS10x.dmg