Updates & Downloads

GPSMAP 66i (WebUpdater) software version 4.20

as of August 5, 2019

Use Garmin Express to install this file.

(20.75 MB)

View system requirements

Change History

Changes made from version 4.10 to 4.20:

Fixed issue with downloading BirdsEye imagery.

Changes made from version 3.00 to 4.10:

inReach messages will now draw on the map
Added create and update Contacts
Added ability to update plan details
Added plan usage page
Added keyboards for Ukrainian, Estonian, Lithuanian, and Farsi
Added warning to charge icon when device is too hot or cold to charge
Improved altimeter calibration after each startup
Removed Forward button from Preset messages
Improved message details page when using night mode

System requirements

IBM-compatible PC running Windows 2000 or later operating system and an available USB port.