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An Advanced TDB Editor for Garmin's Mapsource/Basecamp

Features include locking or unlocking of maps,adding copyrights,(dis)abling printing etc

TDB Editor 3

Garmin's DEM basemap which comes with many gps devices is pretty basic and blurry showing 3d features only if you zoom out !

It is a map of the world only showing you the important mountain ranges but totally blurring local height differences..

For a gps you need DEM files which come with most TOPO maps.

Fortunately, we can now generate our own DEM files based on freely accessible hgt data. Unfortunately, such maps cannot be exported to a gps without changing & recompiling the tdb file.

TDB Editor 3 checks for DEM files and adds DEM data to your tdb file.

This enables you to quickly and easily export 3d maps to your gps device :

  • Load your tdb file from the Product1 folder of your gmap
  • Use the new File option 'Save DEM Data'

If Dem Builder is unable to create dem files a message appears informing you of missing dem files.

see more.

Customized DEM on a GPS

Customized DEM on a GPS
clearly showing height differences
unlike Garmin's DEM map of the world


Locked Maps Detected

You can save your City Navigator Maps to your PC but your GPS device needs to be plugged in.
When you remove your device you get a Locked Maps Detected' message
TDB Editor 3 enables you to lock your own maps on Basecamp / Mapsource.

See below for more information.

Locked map
tdb editor 3
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Download & Manual

   Secure Download TDB Editor 3.11 (W10 compatible)  

 Secure Download TDB Editor 3.11 portable

   Secure Registration of TDB Editor
   Secure Download TDB Editor 3 manual

How to Start

How do I find a tdb file?

All Mapsource & Basecamp maps are controlled by a .tdb file..

Opening a tdb file
  1. From Main Menu go
    Tools --> Get tdb from Mapsource
    to show all tdb files

  2. Select a tdb file

Youtube : How to (un)lock maps & more

Youtube Tutoirial
How to lock maps, disable printing, reduce a map window
Locking or Unlocking Maps

Control Mapsource/Basecamp Printing Options

Editing Printing Options   Showing Map Window
Editing Printing Options   With Map Window

How to ...

  1. restore Mapsource when it crashes
  2. rename any mapsource/basecamp name
  3. change mapnames so they are easier to read on your gps
  4. Lock & Unlock all your maps
  5. Unlock TOPO maps on Mapsource/Basecamp only
  6. add/remove routable option
  7. force direct routing when it doesn't work
  8. add/remove profile(height) option.
  9. add or edit copyright description when creating your own maps
  10. create or remove 'Reduced map window for printing' and other (printing or viewing) messages
  11. disable any form of printing.
  12. add or resize Restricted Window View
  13. quickly identify & edit mapnames, useful when you want to isolate a particular IMG file.
  14. nvestigate various byte streams and explore the properties of many important but as yet unknown bytes. You cannot do this with a hex editor as all data has to be recompiled!
  15. Add your own copy right message
  16. Edit map overview properties.
  17. Resize Map Window
  18. Add DEM data so Mapinstall can export maps with DEM to a gps device


  Free   £8
Save tdb file  
mapsource name    
map names 2 only  
edit profile option  
edit routable option    
edit dem option    
Change TDB version    
Edit Codepage  
change FID PID  
Add / remove printing    
Add / remove Locking    
Create Map Window    
Resize Map Window    
Edit Latitude & Longitude Limits    
Edit copyright    
Edit Overview Properties    
Edit Map blocks    
Edit Key Block & explore unknown bytes    
add DEM data if available