Quote Originally Posted by igor.simko View Post
D3048070B is detailed JCV, but some device like nuvi30,40,50 dont support this JCV (show only white screen), you must use lower detailed.
The problem with the Nuvi 30, 40 is not the detail file. What matters is the file format. Nuvi30 not work with vector format, but only works with raster format JCV file.