Thank you for your help.
I installed the CN EU NT 2016.10 map and JCV file as you told me.
The map is working well but I notice some strange route calculations.
For example, in Portugal, to calculate a route that goes from the North to the South of Portugal, the shortest route which gives are 1080Km. The GPS tells me to make this journey through Spain, and I know the optimal route is about 650km by Portugal.
Whether you choose the fastest route or the shortest route, it happens.
The problem is on the map or on the GPS Kenwood?
Is there any way to uninstall all of the GPS memory files and replace the correct files? If so, where can I get the correct files?

In the radio memory has the following files:
* Folder POI
* Folder Voice
* Bmap_amr File
* Bmap_atl File
* Bmap_pac File
* Fs_image.ver
* Gmapprom file

Thanks for the help that you can give me.
Best regards