Garmin Nuwi 255T

[Sun26]

I have buy a new Garmin 255T. And I have few questions? If is it possible to upgrade firmware or is it only software difference that I could have in Garmin Nuwi 255T Truck profile like in Garmin 465(truck option)?
Or is it possible only to add that Garmin routes route for truck?
Because now I have only 3 possibility: Car, bicycle, walk! Is it possible to add truck???
Must I have also special maps for truck?

Thank you!

If no possibility please answer me why not.

Sun

 

[dhn]

Sun26....

There is a good reason this site is called TomTomForums.com. It's because that is the only brand discussed here.

However, go to this site: gpsreview.net and register there. They do deal with many brands of gps units and have a very active (and helpful) Garmin forum there.