For maintaining and updating Garmin devices, there is a desktop program called garmin.com/express. This desktop program alerts you when updates are ready and helps you install them. Downloads are offered for both Windows and Mac. After you download and install it on your computer, this application aids in configuring your device. 

Follow the on-screen instructions to finish this one-time setup by connecting your device to the computer. Register your device with Garmin Express, connect to Garmin Connect, and update your maps and software.