Open the C:\Garmin folder (or other folder where you un-zipped the files), locate the file named 'Updater' and double click on it. You should see the name of your GPS device next to the 'USB Device' option on the Updater program window. Select the 'USB Device' option, then click on 'OK' on the Updater program window to start the data transfer. Garmin GPSMAP 66i Garmin GPSMAP 66s Garmin GPSMAP 66st. All Garmin GPSMAP 76 GPS receivers are supported in EasyGPS. Garmin GPSMAP 76C Garmin GPSMAP 76C Garmin GPSMAP 76CS Garmin GPSMAP 76CS Garmin GPSMAP 76CSx Garmin GPSMAP 76CSx Garmin GPSMAP 76Cx Garmin GPSMAP 76Cx. All Garmin GPSMAP 78 GPS receivers are supported in EasyGPS.
The GPS 76 is designed to provide precise GPS positioning using correction data obtained from the Wide Area Augmentation System (WAAS). This unit features a built-in quad helix antenna for superior reception and can provide position accuracy to less than three meters when receiving WAAS corrections.