Right, forget my previous request, drove to another dealer, they have a guy there who knows a fair bit about the workshop side of smarts. 1 fairly small bribe and he copied V9.23 and V12.23 onto an SD card for me to play around with.
Regarding the maps, smart/Merc have resale rights so no other companies can sell the upgrade maps. They are locked to the serial number of the unit and the maps can only be activated once. I'll look at getting the maps and seeing if there is anything obvious to crack.
My 2x Highline stereos are the V1, still running V8.20 (1xUK and 1xUS), they are both the same except for the maps, the locked region code and the radio frequencies.
The V2 has a changeable region code but only 5 times, that must be crackable.
I need to get a V2 now as I think a lot more went into it and it is hiding some stuff.