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Updates & Downloads


GPSMAP 66i (WebUpdater) software version 4.30

as of August 30, 2019

Use Garmin Express to install this file.

(20.82 MB)

View system requirements


Change History

Changes made from version 4.20 to 4.30:

Changes made from version 4.10 to 4.20:

Changes made from version 3.00 to 4.10:

System requirements

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