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2017.20 Map Install on SD Card

Former Member
Former Member
Recently installed 2017.20 on my Nuvi 755T and, due to its size, it used the SD card for the first time. Garmin Express said it installed successfully. When I went to use it, it did not provide any directions to my destination. It simply said "Drive to 'XXXXX'" with the X's being the name of every destination I tried. The map would show my starting point with a perfectly straight magenta line that went straight to my destination. It did not follow any route. I thought that maybe the maps did not load successfully and I reloaded them. Same problem.


I then thought I would try taking the SD card out to see what happens. I shut down the GPS, took out the SD card and restarted it. Same problem. I checked the map info on the GPS and, even though the SD card was out of the unit, the map info said 2017.20. Did the unit get the map installed on it even though it was originally installed onto the card? Or is the unit just remembering the last map version installed and used?


Is there anything I can do to get my GPS to be usable again? Like I said, this was the first time the SD card was used. I did format it properly before inserting it into the unit.


I really needed it yesterday to travel from RI to NH and ended up having to print out MapQuest directions and read those while driving. What a PITA that is. It is amazing how easily we get dependent of technology!
  • In addition to the good advice given by Dave, I would also delete everything in the \garmin\jcv folder. Your's might be OK, but there have been cases when some old orphaned files get stuck in there.
  • Former Member
    0 Former Member over 9 years ago
    In addition to the good advice given by Dave, I would also delete everything in the \garmin\jcv folder. Your's might be OK, but there have been cases when some old orphaned files get stuck in there.


    I had two files in there. Of what purpose are the files in the JVC folder?

    My map info now says:
    CN North America NT 2017.20
    (1) AllCN North America NT 2017.20 3D
    Appears simple and straight forward with no extra maps.

    I think all is back to normal now. Only a little on road time will tell. Hopefully, this will be it for awhile. Can't thank you guys enough!
  • Sounds like you're good to go :)

    The jcv file is the junction view file.

    Now you've got it working correctly I'd make a full backup, then use Express in future and you shouldn't have this hassle next time,