Well folks,
After 4 hours of futzing around, I finally found an easy solution to the infamous .gpx file delete/update problem. To arrive at this simple solution, I called the Garmin support line (close, but no cigar).
Tested various options myself based on theories...no avail.
Read furvently and found this posting...which works like a charm (Thanks Jack):
Travel by GPS wrote:
>
> "D G Stewart" wrote:
> > Is there a way to delete groups of waypoints... when I have it connected to my PC.
>
> You should see a couple of GPs eXchange (.gpx) files. I'm guessing
> the one you want is called current.gpx. You can edit this file as you
> would normally with waypoint management software.
I have tried this -even deleted both .gpx files, and the
waypoints are still in the unit... Once you turn the unit
on, the Current.gpx file comes back... So the waypoints are
also stored somewhere else...
The only way I know to delete all the waypoints at once is
to put the unit into the Maintenance Mode...
MAINTENANCE MODE:
Step 1. Turn your Nuvi unit off, remove any SD cards from
the SD card slot and make sure that the unit is not plugged
into
any computer.
Step 2. Place a fingertip on the upper left hand corner (note: Garmin told me to touch lower right which did not work - close but no cigar) of
the touch screen and keep it there while turning the unit
on, a
prompt should read " Do you really want to start in
maintenance mode?"
Step 3. Select the yes button.
Step 4. Enter your PIN if enabled.
Step 5. Main Maintenance Mode screen should have 4
selections:
System information
View Diagnostics
Clear User data
Clear Waypoints
Step 6. After some selections the unit should reboot and you
check to verify unit after rebooting.
--
Jack