Hack Garmin 2009 GPS Update
Before you perform this GPS map update hack, you need the following pre-requisites.
After downloading the 2009 Garmin North America Map Update, open the WindowsMsi folder, run CNNANT2009Update_ENU.msi (for English) or appropriate file to choose your preferred language, and install it.
After the installation is completed successfully, you should now see the Mapinstall icon; click on the same. Now, you need to find Unit ID from GPS.
To do so, turn on your GPS device, click ‘I agree’ on agreement of terms and condition, and tap on Settings, Systems, See Unit ID, Note it down.
Now, run the Key-generator, and enter the Unit ID here; this should be entered into the top box. In the Map Product field, select ‘custom mapset’, enter ‘325’ in the FID field, and click generate.
You should now get the unlock key, and you need to copy this value, and keep it safely.
Installing the Maps
Now, it should be a cakewalk to run Mapinstall program, and click on ‘Unlock Maps Button’ option, when you see the message that Maps are locked.
Simply click add button when the new window pops-up, and now enter the unlock key generated from the keygen generator.
After adding the key, you just need to follow the instruction, choose the location to install maps, and you should be done with the process.
Note: If you don't have an external SD memory card, your old maps will have to be removed first. To backup old data, you need to copy the gmapprom file located under Garmin folder.