Question about Sanyo NVM-4050 GPS Receiver

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How to unlock maps after re-installing them?

I reinstalled the maps using the factory DVD. Now they are locked and the website that the GPS unit directs me to does not work. That website is for purchasing the RDS traffic updates, for the 4070 and 4370 units. Nothing at all on the website about unlocking my 4050!! Does anyone know what the correct website is for unlocking the maps?

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  • 2JOH Dec 14, 2008

    I did the same thing. I thought I was updating the map and ended up with maps installed but locked and no apparent way to unlock them. I ended up sending in a request for help at the sanyo website (you select "customer relations" then "contact us" to make an inquiry.

    Of course it was late on Friday and I have not heard anything. yet.

    I tried Navteq as well but I have not heard anything on that either.

  • hacker 4rent
    hacker 4rent Dec 19, 2008

    i have the same situation!!@#!@#

  • NastyP Dec 31, 2008

    Exact same problem

  • hous_la Jan 07, 2009

    before christmas i unlocked TMC trial and saw it was not working. next time said to unlock so i did now it says website to go to to unlock and still having problems. :(



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I ended up in the same situation and called (800) 421-5013 for help. The gentelman who assisted me said that how the DVD holds the same data as factory Sanyo 4050 GPS and upgrading has locked your device. To resolve the discussed issue one have to delete everything (plug-in your device via USB cable --> My Computer --> Removable disk) and install fresh copy onto your navigation device via that DVD.
Tried it with NO @!@ JOY

Posted on Dec 19, 2008

  • 1 more comment 
  • hacker 4rent
    hacker 4rent Dec 19, 2008

    on the phone holding for customer service... its been 30 minutes.. !%$@%

  • hacker 4rent
    hacker 4rent Dec 19, 2008

    OK --- the final verdict....

    "That's the
    only thing you can do (delete everything and install it again via DVD)
    -- If still it doesn't work; you have to return it"

  • hacker 4rent
    hacker 4rent Dec 21, 2008

    Finally.. after playing with the Updated files i was able to unlock this device. Anyone running into this problem please feel free to email me at the fix is kinda messy but works like a charm.

    delete all files

    open up NOTEPAD and copy the following


    save and name the file as CTFRC7M807000M save as type should be text .TXT

    now open note pad again and type the copy the following:

    and save this file as TXT and the file name should be TestFinish

    now i have two other files that you should need... for that you have to email me so i can attach those files to you.

    good luck all



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My maps are gone how do I fix it

The map may be unselected. To select it;
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  • Press SETTINGS (or LOCALE on models that don't have a settings icon)
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This should show you the maps installed on your satnav. There should be a tick beside the map name if it's selected. If not press the map name and the tick will appear. This should solve the problem.

If this does not solve the problem the map may be locked or deleted. If the map is locked it should say so at the map name. If there's no map name then the map may be deleted.

You can get details on how to unlock your map at

If the map has been deleted you may be able to download it again from the garmin website depending on how old it is. Generally you can download the map for about 6 months after it was first installed.
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