Ensure your device has at least 50% battery or is plugged into a power source before starting to prevent it from turning off mid-update, which can "brick" the unit.
Be cautious with U.S. models used outside the United States; certain firmware versions may disable tracking features in prohibited regions. Astro 320 Updates & Downloads - Garmin International proshivka astro 320 skachat
Launch Garmin Express and select "Add a Device" . Ensure your device has at least 50% battery