Hello, i'm new of the forum, i see that here there are lot of competent people.
i have a problem with an sd that i have bought.
it's a map for sea, i would like to make backup copy to prevent loss when i go to see.
when i put the backup copy in my gps it doesn't works.
i heard about copy protection number on the hardware of the sd.
do you have any suggestion to solve this problem??