Garmin GPS systems are great if you don’t know how to find your way to an address but their maps often get outdated in a few years as new infrastructure is developed in your city. Many find the $80 update somewhat of a pinch in their pockets so here is a solution for those people!
Using this guide you will be able to update your Garmin GPS system to the latest (2009) map data, all you need is a little bit of patience and careful reading.
So let’s get started.
NOTE: The Garmin 2010 Update guide is now up!
What do you need?
- - Garmin Key-generator (here), (here) or (here)
- - Garmin North America Map Update 2009
- - A Garmin GPS with a USB cord
Once you have those files, follow the instructions below:
1) Download torrent, unzip the completed download to your desktop, open up the folder.
2) Go to Windows\Msi\ folder in the folder extracted and run CNNANT2009Update_ENU.msi if you want english language.
4) Select a directory to install or just leave it as the default and move on.
5) Once the installer is finished a Mapinstall icon should be on your desktop now. Run it.
6) Get Unit ID from your GPS device. Turn on unit, tap agree to pass agreement.
7) Tap: Settings –> Systems –> About See Unit ID: Write it down.
8.) Run the Key-generator
9) Put in the unit id (the # you got from your gps’s about screen) in the top box
10) Next, in the Select Map Product area of the keygen choose custom mapset and enter 325 when prompted:
11) Now, click Generate at the bottom of the program & copy the Unlock Key generated at the bottom.
Now to install the maps!
12) When you run Mapinstall it will tell you that your maps are locked, click on the unlock maps button
13) Now a new window will appear, click the Add button on the right side. Enter unlock key you copied from the keygen to the top box
14) Add the key and you will be prompt after 30 seconds of scanning for where you want to install the maps.
15) For an SD card, choose the drive. For the GPS, choose the GPS drive letter, mostly this is chosen automatically.
15 a.) If you don’t want to buy an SD card, you’ll have to remove your old maps from the GPS device. Plug in your GPS using the USB cord into your computer, open the device, and find a file named gmapprom in the folder named Garmin which will be the biggest file on your GPS at almost 1GB or somewhere around there. Backup this file to your desktop and save it in case something goes wrong, this file has all your old map data. After backing that file up delete it from the GPS.
16) You should now see a screen with the map of North America. Choose the areas you want on your GPS system, the selected areas will turn pink once clicked.
17) Finally click the Finish button. Now the process of building and transferring the maps will begin and this whole process takes about an hour.
Once done you will have the new 2009 maps on your GPS system.
Enjoy! Leave us a line if you liked this guide 
By Deeked Coogot July 11, 2009 - 1:58 pm
Thank You for the guide m8. You Rock
By GUY August 13, 2009 - 12:39 am
My UnitID is xxxxx and my Serial # is xxxxxx. I’m having problem generate a value code. Can someone please try to generate a few code and send it to me? I’d greatly appreciate it. Thanks
By labrat August 13, 2009 - 11:57 am
[Comment ID #101729 Will Be Quoted Here]
Numbers removed
Please DO NOT post your serial number or unit ID publicly. It is for your own safety and privacy.
By ride August 23, 2009 - 12:59 am
:tup:
The whole process takes 1/2 day time … to download … burning … installing … but its worth it.
thank you soo much.
By Bill August 24, 2009 - 3:53 pm
Pretty sure I solved my own problem. Seems as if I fat-fingered the unit ID when I was generating the key. Ran keygen again, this time making sure the unit ID was right. Copied the key value, and then changed HKEY_Users///Garmin/Mapsource/Codes registry entry. The name of the entry is actually the 25-digit unlock code. So, you simply re-name it to the new unlock code. I also changed the value in gmapsupp.unl file in C:\Garmin to reflect the same value. Started up MapSource, and there were two entries in the Regions tab, one w/ the old code, and one w/ the new code. Deleted the old one, and the new one worked fine (had all the detail). Used Mapinstaller to load maps onto my device, and everything was fine.
For those that have uninstalled and reinstalled, but things haven’t changed, the above mentioned registry entry is what needs to be changed when you do that. Hope this helps.
By Solo September 6, 2009 - 11:55 pm
Very nice explanation. Thanks for taking the time.
I got it working on the first try, on an Omnitech GPS.
Now tell us how to add more maps…..
By Alan December 5, 2009 - 1:03 pm
Works great anyone have a link for vancover island marine charts?
By Garry February 13, 2010 - 4:41 pm
Help me please to connect Magellan GPS to Garmin PC. The program asks for key (password) May be someone knows how to get it? Thanks
By hanny March 13, 2010 - 8:14 pm
master password for garmin 265w
By Greg March 21, 2010 - 3:54 pm
Question: I’ve read most all the comments above, but I think? my question is a bit different and is not? related to any “unlock” codes.
Just bought the Garmin 60CSx and two 24k DVD’s (West & N. central) I installed the N. central Garmin DVD and all went well. Though now I want to install the 2nd DVD (west) to the same PC, though the PC will not run setup , nor can I view anything on the DVD with Explorer (act like its empty), Though if i put the DVD into another PC its then starts up Setup like it’s suppose too. But I want to install both DVD on the same PC. Help. What must I do?
By john mish July 2, 2010 - 9:58 pm
It wasn’t the key generator that needed to be removed. Its the actual map install s/w that needs to be reinstalled so that you can enter a new unlock code each time. So I removed it, reinstalled it, and ran again. But it never let me enter new unlock codes.
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By stream movies for free online August 10, 2011 - 1:50 pm
Thanks for teaching us how to hack this gps
as a new hacker I appreciate this
By Get Insurance Quotes August 23, 2011 - 10:09 am
The garmin GPS units are great for hobbyists… this is a good tutorial, and things still work similarly.