Hello GreekPilot I do not want you to be confused.

I'm doing test with the modified application by Mr Brown Dog of the [Only registered and activated users can see links. ] and the application default Gena_iCarNav_sys_not_changed-All.apk the same SD.
Applications can be installed without conflict and so I can test a little better.
Does not mean that I'm doing well, follow another path ....
sorry about the mess