https://www8.garmin.com/support/download_details.jsp?id=14335
Change History
Changes made from version 3.56 to 4.59:
Music Player 2.0: Updates to a faster, one-touch control interface and moves some controls to the option menu.
Music App Syncing: Syncing music downloads can now be done without plugging in to a charger.
Music App Auto-Syncing: Every time the watch is placed on a charger, music will be automatically refreshed.
Music Settings: Adds Menu > Settings > Music.
Made several bug fixes and code improvements with CIQ SDK 3.0.
Made improvements to the user experience when communicating with an inReach device.
Fixed an issue where the abnormal heart rate alert would auto-dismiss after 30 seconds.
Fixed an intermittent issue where the device could crash at the end of certain workouts.
Fixed an issue where heart rate data for pool swim activities was graphed incorrectly within Garmin Connect.
Fixed an issue where the user was able to pick large invalid values during treadmill calibration.