IMPORTANT: if upgrading from a software version less than 3.40 you must follow these steps for future BaseCamp Compatibility:
If you are a user of BaseCamp now, or plan to be in the future, you must follow these steps to ensure your data is protected during this software update:
Connect your handheld unit to a computer and launch BaseCamp. Transfer all tracks, routes and waypoints to BaseCamp.
Delete the /Garmin/GPX folder from the handheld's mass storage.
Update the handheld's software via WebUpdater and reboot the handheld.
Reconnect the handheld to a computer and transfer your data from BaseCamp back to the handheld.
Changes made from version 4.60 to 4.80:
Improved map performance in densely-populated urban areas.
Fixed issue with magnetic north offset when projecting a waypoint
Changes made from version 3.50 to 3.60:
Fixed an issue with the reporting of pressure from the barometric altimeter (GPSMAP 62s/62st/78s/78sc)
Changes made from version 3.40 to 3.50:
Added Photo Viewer application
Improvements to the geocaching experience. See TrailTech (http://garmin.blogs.com/softwareupdates/2011/09/improved-geocaching.html) for more information.
Fixed a potential hang on startup when importing large numbers of waypoints, tracks, routes, or geocaches
Fixed issue with very long geocache descriptions
Fixed shutdown when reviewing certain geocache descriptions
Fixed issue where some auto-archived tracks would be named in English regardless of user language
Fixed bug that could cause some geocaches to not import
Fixed issue with track log recording while using the stopwatch
Fixed issue with the anchor drag alarm
Fixed issue with total ascent and total descent fields not displaying values greater than 9999 meters
Modified default map trails to appear as dashed red lines
Fixed potential issue with screenshot color reproduction
Changes made from version 3.00 to 3.40:
Added support for advanced geocache logging with OpenCaching.com. See TrailTech (http://garmin.blogs.com/softwareupdates/2011/08/advanced-geocache-logging-with-opencachingcom.html) for more information.
Added Garmin Spanner mode to GPSMAP 78, GPSMAP 78s, and GPSMAP 78sc devices
Fixed issue with multilingual custom POI files
Fixed issue with setting proximity alerts. The unit of measure can be changed by entering the 'Proximity Alarms' page, pressing the 'Menu' key, and selecting 'Change Units'
Changes made from version 2.80 to 3.00:
Updated magnetic Earth field data
Improved GPS performance
Improved support for BirdsEye™ Satellite Imagery (each provider's imagery can be configured independently)
Increased the maximum number of supported JNX files to 250 from 200
Fixed issues with WAAS/EGNOS
Fixed issue with track navigation sometimes not adding waypoints to the Active Route list
Fixed issue with track and route review from the map page if you came from the elevation plot
Fixed issue with MPC map labels disappearing
Fixed issue with gpi files that have alerts attached to the points
Fixed issue with progress bar displaying properly on power up
Fixed issue with track navigation not adding waypoints to the Active Route list when they are exactly equal to a track point
Fixed shutdown when unit had more than the maximum number of JNX files on it
Fixed shutdown related to topographical maps and land cover text size
Fixed Glide Ratio to Destination field
Fixed problem with profiles and the fields on the map page
Fixed an issue with magnetic north reference and waypoint headings
Fixed shutdown on the map screen when a waypoint was being moved to the same location as a geocache or other POIs
Fixed issue where proximity waypoint alerts could only be set in feet regardless of what was selected as a Distance/Speed unit in the setup page
Fixed an issue with archived tracks not displaying properly
Fixed an issue with having too many custom symbols on the device
Modified the 'Arriving at Destination' message banner so that it no longer appears when navigating to a geocache
Changes made from version 2.70 to 2.80:
Fixed shutdown related to the current track that occurred after updating the software
Fixed a hang that occurred when a unit had 1000 auto-named waypoints
Fixed issue with marine map points sometimes drawing with the incorrect symbol