How to share Carminat maps with other users

For everyone still running the 9.844 or that simply want to try:

I don't know if the install of a Carminat NC still works if the 9.845 is already installed, but I don't expect too much anyway.
Did use different tools and methods to extract the file that corresponds to the PNDNavigator on normal TT's but I think the Hash-test won't allow the installation.
Updated a SD backup that was provided and used the ttsystem files that was created on the SD - so I did what I could to get the correct files and to make sure it fits together.
Keep in mind that you need to extract several images to get to the file.
Just getting the stuff sorted using Windows is a pain and without a device to test pretty much useless trails anyway ;)
To get the thing on your Carminat:
Download the archive and unpack the ttsystem to the root of your Carminat SD - not the original SD, a backup!!

I don't know what changed in the filesystem but I do know that a 9.844 SD can be copied with no problems at all.
Just the fact that the map on such a SD won't work still stands.
But I had two SD backups from a CL now and no map data was included, only the user stuff like mapsettings.cfg and the speedcams - no actual map, as I think the map is only the internal memory after installation.