http://www.stormcam.org/waypoint-manager/
Garmin StreetPilot Colormap?
I recently purchased a Used Garmin StreetPilot Colormap GPS. When I looked up reviews, it scored very high. But it seems to be outdated. 
Is there an upgrade that will let the Colormap route trip internally, instead of doing it on the computer?
What is the best and newest Maps to install for this unit? Garmin.com only lists MapSources: WorldMap, Trip & Waypoint Manager, and MetroGuide North America for this unit. What about City Naviator or City Select?
Sorry about the length of this question and Thank You for any help you can give.
This is Just a Garmin StreetPilot Colormap. No Model Number.
I have a Garmin and they have an excellent website and they do allow on-line upgrades to their software. You didn’t give a model number so here is a link to their products page. Click on your product and then on that page you will see a link for updates and downloads.
https://buy.garmin.com/shop/shop.do?cID=134
Good luck
Garmin Oregon 300 – Functions, Setup, Usability – PART 1