Quote Originally Posted by SergioSe View Post
@lolypop000 you have a lot of post in this forum and others forums talking about this afirmation. If the SD only had a unit ID protection, having a SD card not initiated would be enough to make a lot of copy of this SD card, and once married with the unit they would function properly.
For example, using the copy of piostrics, but it is not true. Futhermore, you can make a copy of a SD initiated and the copy do not function in the same unit although you have a perfect copy, you can read the experience of others members in this same topic, so obviously there will be another kind of protection to avoid you can clone the sd, and the only part of the sd that nobody can change is the CID. Unfortunately, I do not have enough knowledge to discover these things, simply I read some post.

Sorry if I offended someone.
I talk about garmin nuvi and on nuvi you can take different SD card and map work.
Example: if you have nuvi 3490 and 8Gb SD, you just copy/paste from 8Gb SD on 16Gb SD and add it in the same unit and map work.
On mercedez, some of data is writen also in main unit not only on SD, unl and gma after first run go in main unit ( internal hdd ) but don't know how to access internal hdd of this mercedez unit.

Kenwood devica have on back mini usb port where you can connect notebook and explore internal storage but don't know if mercedez unit have also on back, mini usb port.

Do you try copy/paste ( in regular way ) your SD conntent and add it on different SD and try if your unit see it?