Pin?

Hi all,

This weekend I bought myself a second hand C200 (W204 facelift) from 11/2011. Very pleased with the car of course and a huge change according to my C200 from 2005.

On the forum I found a download for Audio 50 NTG4 v16 to update Comand. As I read on different websites there is also need for a PIN generated depending on your VIN. Is this correct? How is it possible to use the download if I do not have a PIN? Or am I wrong here?

Also, the building year of the C200 is 11/2011, do I need a NTG4 or NTG4.5? (European maps)

Thanks for any help, much appreciated!