Quote Originally Posted by Giomen View Post
Garmin Echomap Plus is not read any map without the Garmin original signature (gma). But know you can patch software in the device as I heard.
It depends, I am not totally sure of this information. It may not work with the software updated in the last V. 7.50. However, a colleague has the same device, in the same version of the software and has the non-official letter of Bluechart, only works on his device, when I insert my GPS does not work, who created, associated with his SD card, then reads letter unlocked or modified. And I think it's something like that that is missing to make the GPS recognize the CCD Gold, just do not know how.