Astro and DC 40 Owner’s Manual Appendix2. Go to www.garmin.com/webupdater.3. Follow the on-screen instructions.NOTE: To avoid data corruption,do not turn off the Astro or theDC 40 during data transfer.4. On the Astro, press DOG >ENTER > MENU.5. Select Upgrade Dog Unit.6. Follow the on-screen instructions.Caring for the DevicesnoticeAvoid chemical cleaners and solventsthat can damage plastic components.Cleaning the Devices1. Use a cloth dampened with a milddetergent solution.2. Wipe it dry.Cleaning the Screen1. Use a soft, clean, lint-free cloth.2. If necessary, use water, isopropylalcohol, or eyeglass lens cleaner.3. Apply the liquid to the cloth, andgently wipe the screen with thecloth.water ImmersionnoticeThe Astro and DC 40 are waterresistant to IEC 60529 IPX7. Theycan withstand immersion in 1 meterof water for 30 minutes. Prolongedsubmersion can cause damage to thedevices. After immersion, be certainto wipe and air dry the devices beforeusing or charging.Extreme TemperaturesnoticeDo not store the Astro or DC 40 whereprolonged exposure to temperatureextremes may occur, becausepermanent damage may result.