To update the software on your Approach G10, you must connect the device to a home computer and check for updates through the Garmin Express program, which would need to be installed to the computer via the site at express.garmin.com
If you are getting an error when attempting to update via Express, then close the program, and disconnect your G10 from the computer. After disconnect, check the display screen on the G10 to see if the alert "Update Available: Install Now? Yes or No" is showing on the screen.
After reboot, reconnect your Approach G10 back to the computer and attempt to install the updates at that point.
If you continue to have concerns, please reach out to Garmin Support to speak with Golf Specialist to walkthrough solutions for the concern.
