Hi my friends.
New Garmin marine GPSr does not support unlock bluechart maps anymore(like echomap series). I also tested locked maps with creating unl file lock with device unit ID or micro SD serial, but not helpful.
Free custom maps are also not supported buy theme (not authenticated).
These devices just work with garmin official SD card and maps which downloaded trough garmin express.
Is there any Idea for solving this problem?
I have echomap 42cv to test.
Thanks.