Before you begin, you will need to go to Garmin's website and download their "Web Updater" software.
Garmin Express and Garmin Map Updater include methods for installing maps to a SD card for most but not all devices. if you still get stuck on the loading screen, please let me know. Can you see the garmin as a device with removable storage..? Let me ask you this, do you have an SD card inserted into your garmin? Im sorry that weve had to come to this conclusion, but without the device being readable, weve hit the end of what you and I can do together. US: 913-397-8200 US Toll Free: 1-800-800-1020 Canada: 1-866-429-9296 Mon–Thurs: 8 a.m.–6 p.m. Central Time (closed holidays) If they wont repair it for free, then were going to have to either pay garmin or send this in to a GPS repair shop to get it fixed..Updating the software in your DC 40, DC 30, or DC 20 is a little more involved, but not difficult. Press the DOG button to pull up the Dog Tracker Screen. , , , SD, Map Checker (WINDOWS) Map Checker (WINDOWS) Map Checker (Mac OS).