Gps units self updating
While a GPS unit makes finding a destination much easier on the road, outdated maps and software make the device less effective.
Keep your Garmin GPS unit up to date through the company's Garmin Express application for Mac or Windows computers.
The Windows version works on computers with Windows 7 and higher; the Mac version is for OS 10.10 and higher.
Keep the GPS unit connected to the computer as Garmin Express installs updates.Determine which type of global positioning system you use.This can vary by manufacturer and the operating system installed on the GPS unit.Once all updates are installed, safely disconnect the GPS unit from the computer by right-clicking the device in a Windows computer and selecting "eject" before unplugging the USB cable.
To safely unplug the device from a Mac computer, select the "eject" option in the file manager, then unplug the USB cable.After Garmin Express completes the search, it lists all available updates.