IMPORTANT: if upgrading from a software version less than 4.80 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 6.10 to 6.20:
Improved map performance in densely-populated urban areas.
Fixed issue with magnetic north offset when projecting a waypoint
Fixed issue with track log recording while using the stopwatch
Fixed mass storage issue when used without batteries
Changes made from version 5.10 to 5.20:
Fixed potential power-up issue introduced in previous release.
Changes made from version 5.00 to 5.10:
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 the photo orientation would be incorrect in the photo viewer
Fixed potential shutdown while scrolling through Garmin Connect photos
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
Changes made from version 4.80 to 5.00:
Modified default map trails to appear as dashed red lines
Fixed issue where geocache icons would sometimes not draw on the map while using Garmin GB Discoverer™ maps
Changes made from version 4.50 to 4.80:
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.
Fixed issue with multilingual custom POI files
Changes made from version 4.20 to 4.50:
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 MPC map labels disappearing
Fixed shutdown on the map page when you have a geocache dashboard active and return after pressing the geocache name
Fixed issue with moon not showing on sun and moon page
Fixed issue with photo viewer not displaying correctly
Fixed issue with progress bar displaying properly on power up
Fixed issue with waypoint distances showing significantly off in the waypoint manager
Fixed issue with 3D view
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 more than the maximum number of JNX files were present
Fixed 'Search Near' functionality on Hunt & Fish and Sun & Moon pages
Fixed shutdown related to topographical maps and land cover text size
Fixed shutdown associated with certain custom POI files
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 an issue with archived tracks not displaying properly
Fixed an issue with having too many custom symbols on the device
Fixed an issue with renaming a waypoint immediately after creating it
Modified the 'Arriving at Destination' message banner so that it no longer appears when navigating to a geocache
Changes made from version 4.00 to 4.20:
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