Installing the Latest Software Updates to Your Legacy Outdoor Handheld | Astro® 220 | Garmin Customer Support
Updating the Software on Your Astro 430 / 320 System
Garmin Support | Astro® 430 | Software Updates - YouTube
The Garmin Astro 220 DC 30 Bundle GPS Dog Tracking System ($599.95 at Amazon.com, Sears, and REI) is designed for hunters and sportsmen but it also works for adventurers who run or
Updating DC 20, DC 30, and DC 40 Collars with an Astro 220 | Garmin Customer Support
Garmin Support | Astro® 430 | Software Updates - YouTube
Updating Garmin 320 or 220 - YouTube
Updating DC 20, DC 30, and DC 40 Collars with an Astro 220 | Garmin Customer Support