Changes made from version 8.80 to 9.00:
GPSMAP 66i Firmware Update 9.00 released 26JAN22:

This update is being released in stages via Garmin Express, and should be available to everyone soon.

Spoiler: Fixes for the GPSMAP 66i
Fixed issue with main menu as base page.

Improved Find key to search near map cursor position when appropriate.

Fixed possible issues with expedition mode.

Fixed possible issues with Search Near option.

Fixed possible issue with Cancel button when saving a course.

Fixed incorrect option menu items when reviewing a course.

Fixed incorrect option menu items when reviewing the current recording.

Fixed possible issue when changing long course names.

Fixed incorrect English text when deleting a profile.

Fixed possible issue where course review page could show stale data.

Fixed routing prompt appearing twice when adding a via point.

Fixed possible issues with menus in Connect IQ applications.

Fixed possible unexpected behavior when saving or clearing an activity.

Fixed adding via points to on road routes to a single point.

Fixed possible shutdown when downloading Birdseye Direct images.

Fixed missing lap data in course files generated on the device.

Fixed incorrect tone for on and off course alerts.

Fixed issue with on and off course alerts appearing when they should not.

Fixed possible issue syncing courses with Explore mobile.

Fixed issues searching for address numbers with more than 6 characters.