First things first.

For Kenwood DNX 5260 BT there's a special version available for Auto Drive Hellas, it's the Greece v 3.20 (Greek) Tracer - Geodata version and in order to find it you should give a call to Kenwood using this number: 2310888890. The thing is that using this certain map will solve the problem with the displaying of all road categories and polygones. A problem seems to exist with pois but you should try it yourself.

What procedure did you use to change the typ files ? How did you do it ?