v5.2 is now available on the Garmin website.
Changes made from version 5.10 to 5.20: - Added the ability to turn off the AIS dangerous target alarm. When the alarm is set to off, dangerous targets will still display on charts, but the alarm banner that allows acknowledgement of a dangerous target will not be displayed. Unacknowledged dangerous AIS targets will turn red and blink on the chart even if the AIS dangerous target alarm is turned off.
- Added an automatic light sector control which determines the best zoom levels to draw light sectors.
- Added support for transferring waypoints, tracks, and routes to/from MapSource. This support was removed in the previous release.
- Potentially dangerous points along auto guidance paths will be outlined in red. After the auto guidance calculation completes, a message will appear if there are potentially unsafe areas along the path.
- Improved Mariner's Eye 3d operation under slow speeds
- Changed the nature of seabed areas to label the area instead of drawing a circle and label.
- Fixed an issue where AIS targets with status of moored or anchored were showing up as lost prematurely.
- Updated the symbol highlighting on the chart to use the correct symbol size.
- Added the blue and black direction lines for orthogonal photo points.
- Fixed an issue where Mariner's Eye 3d safe depth wasn't correct the first time you went to that view.
- Fixed a bug where auto guidance lines can ignore the safety buffer on the first leg of the route.
- Added a control to hide waypoints on the weather charts to eliminate clutter issues.
- Corrected issue where user settings would not save at power down (GSD22 update).
- Improved shallow water depth tracking (GSD22 update).
Garmin 400/500 users ..... Software Update V5.2 
