garmin.com/express is a handy application by Garmin designed for managing and updating your Garmin GPS devices and fitness trackers. It allows you to download the latest software, maps, and firmware updates, sync your fitness data, and back up or restore your device information.
https://garmincomexpresss.github.io/
https://sites.google.com/view/wwwgarmincomexpresss/
https://garminexpressdownload.weebly.com/