Tip & How-To about GPS

No Detailed Maps Found That Support Routing

A lot of people have looked for solutions to the message "No detailed maps that support routing" which can appear on Garmin Nuvi satnavs.

This solution can also be used when the message doesn't appear but no maps are loaded. When no maps are loaded try the instructions in paragraph 5 below Selecting Maps on your Garmin Satnav

If that doesn't solve your problem the maps may be locked. In this case return to paragraph 2 below and follow the instructions to the end

(This solution is for both PC and MAC users. Follow the instructions only for whichever you use).

The "No Detailed Maps Found That Support Routing" message may appear on your Garmin nuvi satnav for the following reasons:

  • The Satnav is missing it's unlock code
  • The maps on the Satnav have been disabled
1. To determine the cause of the message, touch the screen until the message "No Detailed Maps Found That Support Routing" disappears.
  • If you see a "Can't Unlock Maps" message following this, remove any microSD / SD cards in the device and follow the instructions below for Retrieving your unlock codes followed by the instructions for Creating an unlock file
  • If you do not get the Can't Unlock Maps message then skip to Paragraph 5. below Selecting Maps on your Garmin Satnav
2. To retrieve unlock codes you need to have your satnav registered with garmin. If you haven't already registered it, connect the satnav to your computer and go to www.garmin.com. Select your country from the dropdown list and click "Register your garmin device". Follow the prompts. You'll be asked to create a username and password. Keep them safe. You'll need them anytime you need to update your maps or solve problems in the future.

3. Retrieving your unlock codes:
  • Log into your myGarmin account
  • Select Manage Maps
  • Select Details

  • The unlock code is located under the Installed Maps.
Creating an unlock code file for PC:
  • Plug your Garmin device into the USB port
  • Double-Click on My Computer or Computer located on the desktop
  • Right-Click on the Garmin or nuvi drive
  • Click Explore
  • Double-Click on the Garmin folder
  • Right-Click in a blank space in this window
  • Move your mouse over the word New
  • Select Text Document
  • Press Enter / Return on your keyboard
  • Double-Click on the New Text Document. This will open the New Text Document in a window called Notepad
  • Type the unlock code that is listed in the Manage Maps section of your myGarmin account in all upper-case letters with no spaces
  • Select File
  • Select Save As
  • Change the Save As Type to All Files
  • Type gmapprom.unl in all lower-case letters for the File name
  • Select Save
  • Close the Notepad window
  • Delete the New Text Document file

  • Disconnect the Satnav from your computer
Creating an unlock code file for Mac:
  • Open the TextEdit application located in the Applications folder on the Mac HD
  • Click Format
  • Select Make Plain Text
  • Type in the unlock code that you retrieved from your mygarmin account. The unlock code should be in all capital letters and with no dashes.
  • Click Save As and name the file as gmapprom.unl (Note: Be sure to uncheck the box If no extension is provided, use .txt)

  • Copy the gmapprom.unl file to the GARMIN folder on your device. (Note: Save the file directly to the Garmin mass-storage device if connected)
4. If you have a second maps you may also need to unlock it e.g. if the first map is USA and second is EUROPE this may also need to be unlocked
  • Plug your Garmin device into the USB port
  • Double-Click on My Computer or Computer located on the desktop
  • Right-Click on the Garmin or nuvi drive
  • Click Explore
  • Double-Click on the Garmin folder
  • Right-Click in a blank space in this window
  • Move your mouse over the word New
  • Select Text Document
  • Press Enter / Return on your keyboard
  • Double-Click on the New Text Document. This will open the New Text Document in a window called Notepad
  • Type the European unlock code that is listed in the Manage Maps section of your myGarmin account. This will need to be typed in all upper-case letters with no spaces
  • Select File
  • Select Save As
  • Change the Save As Type to All Files
  • Type gmapprom1.unl in all lower-case letters for the File name
  • Select Save
  • Close the Notepad window
  • Delete the New Text Document file

  • Disconnect the Satnav from your computer
5. Selecting maps on your Garmin Satnav:
  • Touch the wrench icon on the Where to/View map screen
  • Touch Settings (or Locale on some models)
  • Touch Map
  • Touch Map Info

  • Press the checkbox next to the maps to be selected on the satnav
    A tick will appear in the box. The map is now selected.

Posted by on

GPS Logo

Related Topics:

Related Questions:

1 Answer

no detailed maps found that support routing.need to download software on to micro sd card for garmin nuvi 205


The solution to the "No detailed maps that support routing" problem can be found at http://www.fixya.com/support/r6197735-no_detailed_maps_found_support_routing

To set up a map on the micro SD card you can follow the instructions on http://www.fixya.com/support/r5628920-update_garmin_satnav_maps Don't download directly to the micro SD card as it won't be recognised by your satnav. Download to the computer and install from the computer to the card as described at the above link.

Apr 11, 2011 | Garmin nuvi 205W GPS Receiver

1 Answer

was using it and went crazy and now it says no detailed maps found that support routing. the streetpilot cannot be used without them what do i doo


There's a solution to this problem for garmin nuvi satnavs at http://www.fixya.com/support/r6197735-no_detailed_maps_found_support_routing
While your satnav is not a nuvi I would imagine that the same solution should work for it since they're both made by garmin.

Mar 31, 2011 | Garmin StreetPilot c530 GPS Receiver

1 Answer

cannot unlock the maps in my garminedge 705. When i turn unit on message comes up cannot unlock maps


Information on unlocking garmin maps can be found at http://www.fixya.com/support/r6197735-no_detailed_maps_found_support_routing

There's more information there than you need since the article is about garmin nuvi satnavs that display a message "No detailed maps found that support routing" but part of the article deals with locked maps. The principle is the same for the garmin Edge but you'll need to skip to the part that deals with unlocking maps.

Jan 02, 2011 | Garmin Edge 705 Handheld GPS Receiver

1 Answer

My garmin nuvi 205 keeps telling my " No detailed maps found that support routing. The nuvi cannot be used without them."


The "No Detailed Maps Found That Support Routing" message may appear on your device for the following reasons:
  • The GPS device is missing it's unlock code
  • The maps on the GPS device have been disabled
To determine the cause of the message, touch the screen until the message "No Detailed Maps Found That Support Routing" disappears.
  • If you see a "Can't Unlock Maps" message following this error, remove any microSD / SD cards in the device and follow the instructions below for Retrieving your unlock codes followed by the instructions for Creating an unlock file
  • If you do not get the Can't Unlock Maps message then skip to the instructions for Enabling maps on the GPS device at the bottom of this solution
To retrieve your unlock codes you must first register your satnav if you haven’t already done so.
To registe;

  • · Connect the satnav to your computer.
  • · Click on “myGarmin”
  • · Click on “Register Your Garmin Product” and follow the prompts
You’ll be asked to create a username and password. Write them down and keep them safe as you’ll need them anytime you want to update your maps.
Retrieving your unlock codes:
  1. Log into your myGarmin account
  2. Select Manage Maps
  3. Select Details
  4. The unlock code is located under the Installed Maps.
Creating an unlock code file for PC:
  1. Plug your Garmin device into the USB port
  2. Double-Click on My Computer or Computer located on the desktop
  3. Right-Click on the Garmin or nuvi drive
  4. Click Explore
  5. Double-Click on the Garmin folder
  6. Right-Click in a blank space in this window
  7. Move your mouse over the word New
  8. Select Text Document
  9. Press Enter / Return on your keyboard
  10. Double-Click on the New Text Document. This will open the New Text Document in a window called Notepad
  11. Type the unlock code that is listed in the Manage Maps section of your myGarmin account in all upper-case letters with no spaces
  12. Select File
  13. Select Save As
  14. Change the Save As Type to All Files
  15. Type gmapprom.unl in all lower-case letters for the File name
  16. Select Save
  17. Close the Notepad window
  18. Delete the New Text Document file
  19. Disconnect the GPS device from your computer
Enabling maps on the GPS device:
  1. Touch the wrench icon on the Where to/View map screen
  2. Touch Settings
  3. Touch Map
  4. Touch Map Info
  5. Select the checkbox next to the maps to be enabled on the device

Aug 13, 2010 | Garmin nuvi 205 GPS Receiver

Not finding what you are looking for?

13,573 people viewed this tip

Ask a Question

Usually answered in minutes!

Top GPS Experts

yadayada
yadayada

Level 3 Expert

75077 Answers

The Knight
The Knight

Level 3 Expert

73665 Answers

kakima

Level 3 Expert

102366 Answers

Are you a GPS Expert? Answer questions, earn points and help others

Answer questions

Loading...