I certainly don't want to update my nuvi 250 if it will cost me any tracklog functionality.
If your current nuvi is operating fine, I would wait at least a month or so just to see if any issues come out of the closet.
Keep an eye on this site for updates on the firmware.
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Getting Official Garmin Map Updates Using Maps from Other Sources Community Q&A Before you go on a road trip, you may want to update the maps on your Garmin Nuvi GPS device so you have the latest map data and won’t get lost.
The question is, do I want to accept the firmware update? I would like any information that I can get about the newer firmware before I accept it. I've seen some discussions about a hack for the 200 (not 250) that is use to record a tracklog.
And the information seems to be that if the software is updated the tracklog capability is lost. I have not yet determined if and how I can extract this data, but it's something that I very much want to do.
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