Locosys GT-31 Owner's Manual page 59

To Upload Navigation Data from a host PC to GT-31
Step 1: Select "COM Port"
Step 2: Select the data items to be uploaded
Step 3: Click [Write] command and select the file (refer to
NAVILINK file naming) to start uploading data.
NOTE: Routes will have reference to waypoints.
Follow the steps below to ensure data consistence:
(1) Backup the routes/waypoints if needed
(2) Delete all routes and waypoints
(3) Upload the new waypoints ( *.wpt) first then upload new
routes (*.rte). All waypoints referred in the new routes should
be already uploaded before uploading routes.
NOTE: The uploaded track will override the original track in the device.
How To: Download and Upload Data
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