Expert GPS even works with your own scanned maps, and data from over 100 different mapping, GIS, and CAD programs.Expert GPS Home is an affordable outdoor trip planner at only .95.They can then download as much data as possible onto their GPS (leaving some room for GPS data collection out in the field).

I ran the firmware update as per the instructions from the Garmin website and two files copied to the unit but the third file (I can't recall the extension) failed to copy with a file in use error.

I could not work out a way to recover from this as the upgrade failed (not fully complete) and the only option was to reset the unit via the power button.

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Expert GPS can transfer Garmin nüvi 200W waypoints through your computer's USB port.

When I tried to do it again, I got the message that the 670 was already updated,tried to update again,got the message"The update file is corrupted".

But your procedure worked,took a good minute for the flicker and then the Pre-Boot message to disappear,then it started loading some Bluetooth update and then came back to the normal screen.

It only takes a second or two to download all of the data from your Garmin using Expert GPS.

Transfer data back to your Garmin nüvi 200W with a single click.

This seems to take a long time (60 seconds at least). Once the pre boot mode message disappears release the power button and your device will perform some activities to recover from the above problem.