Contact the company that your GPS comes from. You can find their number listed on their website. They will be able to to tell you where to find the necessary items to update your GPS.
I think Magellan GPS units needs the least updating
To find instructions on updating maps on a Garmin Nuvi GPS, first navigate to the Garmin homepage. Next, go to the site's support page where you will see a link for "FAQs". On the FAQ page, type "updating maps on a Nuvi" in the text field and click "search".
Car GPS systems are highly accurate providing there is no road construction or detours since you last updated/Synced the device to the servers. Most GPS have automatic updating or even streaming updating which makes arriving at the wrong destination unlikely.
You can do this through a number of ways. You can choose to go and ask the store where you bought your GPS system if they provide the installing CD, look for it in the internet, or call the company of your GPS system.
No service required, you simply use gps. Updating the maps can be quite expensive, checkout the best value formney upgrade before purchasing the GPS unit.
The directions of the GPS should be followed all the time when driving, however new directions can be downloaded all the time from updating your GPS on your computer.
Updating your GPS maps depends on what manufacturer and specific GPS model you own. You can generally update the GPS maps by either downloading them through the system or buying updated maps on a CD.
Navigation was a factory option.
Mine came with a CD
If you mean updating the software, the reason for this is because things change. Landmarks change and roads. Updating gets all the new info in so your GPS can work properly! This also helps you access any new cool features.
The Mercedes GPS navigation does require an installation cd. From what I read its a waste of money because they usually don't work. It looks like its cheaper to buy your own GPS.
there is a CD cartridge in the boot the of the car this is just for the gps