WARNING: If you are updating from a previous software version, this software will clear user memory.
Please back up important data (routes, tracks, and waypoints) to MapSource prior to updating.
Changes made from version 4.20 to 4.40: Corrected shutdown problem in aviation mode.
System requirements:
IBM-compatible PC running Windows 2000 or Windows XP operating system and an available Com 1, 2, 3, or 4 port.
PC Interface Cable for your GPS unit. The PC Interface Cable may be purchased through your local Garmin distributor or ordered direct from Garmin Online Store