Changes made from version 2.40 to 2.50:
Improved marine map support
Fixed issue where the active route would not recalculate correctly if route avoidance settings were changed
Fixed possible issue where voice prompts could not be heard when using headphones
Changes made from version 2.30 to 2.40:
Fixed possible freeze when ejecting the unit from mass storage
Fixed possible shutdown on the GPS page with low battery
Fixed routing for routes that include shaping points
http://www8.garmin.com/support/download ... p?id=10983