Hi
For my Colorado 300, this is how I do it.
I save the cartridge to my C drive
I plug in my Colorado in to my computer
I go in to Explore and find the file you saved (cartridge)
I copy that file and then I find my Colorado under my computer (it will come up as a drive, my is L drive)
My comes up to Garmin Colorado (L) on that tab you should have garmin and Wherigo. [Garmin Colorado(L)/Wherigo.]
I save mine in the Wherigo folder
And that is it
Where I have Colorado, it should be your Oregon
This is about the same way you put GPX files on your unit. You just go: Garmin Colorado(L)/Garmin?GPX
Hope this helps
