[Q] multimedia and GPS car system_Hacking possibility of the firmware topic

Hello everybody !

I'm following this forum for 6 years now.. (android and now WP8)
It's every time very helpful to come here when i want to know someting about my différents devives.

Today I'm coming with a question.

I bought a french car last week (citroen DS5).
The mutimedia system is a RT6 e-MyWay.
I would like to know if somebody can look Inside the software for give me his opinion.
Do you think that it's possible to add a fonction to play video or some other interesting (hidden stuff) ?
the firmware is below :
http://9brgj7xd6e.1fichier.com/

I don't know if it's an open firmware !?

thank you in advance ;)