Updates & Downloads
Text, Greek, Astro 320 software version 2.20
as of August 5, 2013
View system requirements
- WARNING: If this software is uploaded to a device other than that for which it is designed, you will not be able to operate that device.
- If attempts to upload software fail, you may need to return the device to Garmin® for service.
- IBM-compatible PC running Windows XP or later operating system and an available USB port.