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Updates & Downloads


GPSMAP 66 (WebUpdater) software version 4.10

as of March 17, 2020

Use Garmin Express to install this file.

(18.81 MB)

View system requirements


Change History

Changes made from version 3.40 to 4.10:

Changes made from version 3.10 to 3.40:

Changes made from version 3.00 to 3.10:

Changes made from version 2.90 to 3.00:

Changes made from version 2.50 to 2.80:

Changes made from version 2.10 to 2.50:

System requirements

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