You connect your sat-nav to your PC or Mac using the USB cable that came in the box.
If Garmin City Navigator Singapore/Malaysia NT, Malsingmaps Malaysia/Singapore and Malfreemaps are activated, Garmin City Navigator Singapore/Malaysia NT will be set as the default map for navigation. You may also contact Garmin authorised dealer for product support.
If you've purchased one of Garmin's many GPS units that offer free map updates, you will choose this map updates page, which will prompt you to download and install the Garmin Express map updater utility, if you don't already have it installed.
Follow the instructions to get Garmin Express running on your machine.
Garmin have made a number of changes to their map update procedures in the last year.
For those with newer devices these changes have made it much simpler, for others it can still be a painful process with numerous calls to Garmin technical support.