The New "Quick & Dirty" Guide to Loading Open/Unlocked MSM Map - NUVI/HANDHELD
Where to Find MSM's Unlocked Maps
- SD/mSD Card (Optional)
- USB to Mini USB Cable
- Patience and ability to follow instructions
1a) You can try MSM Official Download Page
Or the following links to see if there are later versions:
1b) MSM/Garmin NT Format Maps for Non Localised Units
- Free but requires Unlock Code
(Click to read the whole topic, Latest map is the one with the highest number value - 2009.XX)
1c) MSM/Garmin NT Format Maps for Localised Units
- Free but requires Unlock Code.
Linked directly to Garmin Download Website.
1d) Find the In-house MSM NT Format Maps in this Sub-Forum
- Free and Unlocked
(Latest Map is the one with the highest number value - v5.xx)
Generating Unlock Codes (UNL) for 1b) & 1c) is done on the Garmin Website. Please find out your GPSID before
requesting for UNL. To find out your GPSID click here.
Using the code generated in Garmin's website, you copy and paste it into notepad or similar program.
Save the file as Gmapprom1.unl. If you are installing 1b) into GMXT, make sure you rename Gmapprom1.img/unl to
Once you download and un-RAR/Zip the map and generated the UNL, put the Gmapprom1.img & Gmapprom1.unl
together into the same Garmin folder either in your Nuvi memory or SD card.
For MSM NT Format Maps (v5.xx), just un-RAR or un-Zip the Gmapsupp and copy and paste into your Nuvi or
SD Card. This map is unlocked and no other steps required to start your fun. Please back up any maps you have
in your device before installing. 90% of Garmin maps are named Gmapsupp.img
Which Map to Choose
2a) MSM NT Format Maps for Non Localised Units:
Almost all Garmin devices can use this map. May not work in some older handheld and Que.
2b) MSM NT Format Maps for Localised Units:
Will only function in localised SKUs, units that are specifically released for Malaysia, Singapore & Brunei,
purchased locally and comes pre-loaded with a previous version of MSM NT Format Maps for Localised Units
which supports Local Lane Assist and Junction View functions.
2c) MSM NT v5.xx Format Maps:
Most Garmin devices should run this. This map is usually a lot more updated compared to other MSM NT maps.
Please note that, most Garmin Maps for loading into GPSrs use the file name "Gmapsupp". You are
duly advised to separate your map files to avoid one map replacing another either in your computer or
Preparing your Maps to Install
3) There are three ways you may load the Maps:
1xxx & 3xxx series Nuvi devices may have slightly different steps
Loading Single Gmapsupp
- Use only one of the map
- Use both maps - one in Main Memory and the other in SD/mSD card
- Combine the 2 maps together (only if the 2 maps are of different regions) - e.g. for GPSr that do not have SD slot
3a) Simply Copy the Gmapsupp that you wish to install and paste into either:
- Garmin Folder of Main Memory or
- Garmin Folder of SD/mSD Card (create one if none previously existed)
Sometimes maps are placed in the SD card because the main memory may contain another
map using the same filename. Installing maps in SD card is also recommended for maps that
are rarely use.
Loading Two Gmapsupp
3b) If you wish to use one map in Main Memory and the other in SD/mSD card, this is also possible.
It is recommended you place the map you mostly use in main memory and the other in SD/mSD card.
Again, Copy and Paste the relevent Gmapsupp/Gmapprom into the "Garmin" folder of the Main Memory
and SD card. If you do not have an existing "Garmin" folder in your SD/mSD card, just create one.
Combining Two or More Gmapsupp into 1 Bigger Gmapsupp
3c) Some Handheld GPSr do not have Main Memory, only a mSD Card slot. As such, you will need to combine
2 or more maps to make a single Gmapsupp. This is also applicable for Nuvis and devices using GMXT. Do bare in
mind that you are combining 2 or more maps thus "Unlock Code" for each may be required. Don't get carried away
by combining too many maps together, remember, in general, the screen refresh rate of your GPSr is inversely
proportionate to the size of your maps installed.
There are 3 popular methods:
- Using Sendmap20
- Using PatchIMG
- Using GMapTool
3c.i.1) Download Sendmap20 from here ---> http://cgpsmapper.com/download/sendmap20.zip
3c.i.2) Launch Sendmap with this icon:
After you launch Sendmap, you'll see this page (as well as a black DOS window)
3c.i.3) Using the "Add Maps" Button (A) you find the first Gmapsupp. After you have specified the
first map, press "Open" and it will take you back to the Sendmap page now with the first Gmapsupp
3c.i.4) Press "Add Maps" Button (A) again to find and load the second Gmapsupp. Once selected, press
"Open" to go back to the Sendmap page with both Gmapsupp and all its components showing.
3c.i.5) Once you have selected all the Gmapsupp to combine, press "Create GMAPSUPP.IMG" Button (B).
3c.i.6) A "Save As ..." window will appear. You may choose the destination of this Combined Gmapsupp
be sent to.
3c.i.7) Load this bigger combined Gmapsupp into the GPRs "Garmin" folder of your choice to view map.
3c.ii) Using PatchIMG. There is a good step by step write up in Malsing Wiki for using PatchIMG:
MalsingWIKI: Newbies who wants to create a combined MySin-Borneo Gmapsupp
3c.iii.1) Download and install GMapTool from here ---> viewtopic.php?p=166691#p166691
3c.iii.2) After you launch GMapTool, you'll see this page.
3c.iii.3) Using the "Add Files" Button, you find the first Gmapsupp. After you have specified the
first map, press "OK" and it will take you back to the GMapTool page now with the first Gmapsupp
3c.iii.4) Press "Add Files" Button again to find and load the second Gmapsupp. Once selected, press
"OK" to go back to the GMapTool page with both Gmapsupp showing.
3c.iii.5) Once you have selected all the Gmapsupp to combine, click on the "Join" tab on top.
3c.iii.6) Key in the details for "Output File" and "Mapset name". You can also key in the unlock code if the map is locked, you won't need the UNL as the unlock code will be embeded in the map itself.
3c.iii.7) Click the "Join All" button and the combined map will be created.
3c.iii.8) Load this bigger combined Gmapsupp into the GPRs "Garmin" folder of your choice to view map.
Loading Gmapsupp into GPSr Manually
4) To load Gmapsupp into your GPSr:
Word of warning - Most Garmin maps are named Gmapsupp so be careful that you do not replace
- Hook up your GPSr to your Computer using the USB cable treating your GPSr as an external drive.
while Nuvis will automatically go into "Data Transfer" Mode, some Handheld may need user to manually
engage "Data Transfer" Mode from the menu
- Open up either the SD/mSD or Main Memory's "Garmin" Folder (destination) in Window Explorer (or similar)
- Copy and Paste the desired Gmapsupp.img/unl into the "Garmin" folder
- Unhook GPSr from Computer, have fun
a pre-loaded/existing map. Always good practice to back up the contents of your Garmin Folder (incl hidden files)
before mucking around with GPSr memory. Also, as a precaution, always test run the newly created maps from SD
card first. A corrupted map in the main memory could brick your unit.
Click here for the "Original" Quick & Dirty Guide