Thanks, I edited the file with FileBox, and check after editing: it's correctly write "internal" when I open the file again, but when I reboot, it's come back to "none" after launching Carman, or if I try to configurate the gps, it only allow me to check blutooth devices around me and that's all!
And after that the line in the file become something like this: "gps_device=00:21:04:B8:49:58"!!!
What should Carman propose for "configurate GPS"??
And there's a mistake in post 178: it's the file carmand to edit, not carman, correct?

Edit: editing the file with vi worked today!!!
And my GPS fix now!
Many thanks!
Now, I'm waiting for my OBD2 now...
Is it possible to install other themes?