1) Rename img in sd/Map/Switzerland.img.
2) use another sd
Note:If you have multiple parts of City Navigator Europe NT 2016.20 in Nuvi, it will show up all them as "City Navigator Europe NT 2016.20" in maps list because they have the same FID.
This problem is Off topic here, nothing to do with the patcher, I will move posts soon to another thread in Discussion section.
sent with my phone