Question about Garmin GPS

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Webupdater won't detect Garmin unit

I have a Garmin Nuvi 850 with preloaded North American Maps and I have also loaded New Zealand maps. I have a guarantee update for the NZ maps to the 2009 version but I am getting a "there is a problem communicating with your Garmin device error". I am running XP pro.
I'm unable to do a firmware update as WebUpdater says it can not find the device after I have connected it using USB. I get the following error message: "Some devices were found; however, none have the necessary capabilities. Please make sure your device is connected to the computer and turned on, then try again. You may also need to set interface option on your GPS to "Garmin" or "host"."

How do I get the WebUpdater to detect the GPS unit?
Thanks

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I have the same problem of the Nuvi 850 being recognized by webupdater. I downloaded 4.30 firmware update using this link http://www8.garmin.com/support/download_details.jsp?id=4043 plug the unit in and ran the update. It will ask you to disconnect once it is done. The unit will boot up after a few update progress bars. Plug it back in and launch webupdater.

Enjoy,

Fellow 850 owner.

Posted on Mar 26, 2009

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The below solution that I found on another site worked for me. Good luck!

Look at the programs you have running in the background. Some of those like printers or PDA interface software will hog the COM1/Serial port. I just looked at my task bar on the bottom right of the screen, and right click and turned off my printer software and a few other things. Then my GPS would link up properly and update with the Garmin Updater. I don't get why all the other forums have complicated explination that only help a small precentage. This solution will help over half of the problems.

Posted on Mar 24, 2009

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I lost all my maps on my Garmin Street Pilot C330. I contacted Garmin support and went through a number of steps with them including a master reste to no avail. My unot was not being detected on their website and I couldn't register it or access "My maps". All the while I was trying to fix this I was indoors at my desktop where my unit would lose satellite reception. I took my laptop computer and unit outdoors where I got satellite reception. Loaded the Garmin USB drivers and Communicator program on my laptop. Turned on the unit, let it attain satellite reception, plugged it into the computer w/ USB cable and bingo! The unit was detected by the Garmin website. I was then able to register and access My Maps. I downloaded my maps to the unit, which in all took about an hour to complete. Problem solved.

Posted on May 18, 2012

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Posted on Jan 02, 2017

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