I've just brought my friend to pick up his new c class with the stock audio 20 sound system. He seem to have a new function under the aux menu called "boost" which I believe improves the sound quality. Anyone know whether I can get this function via a software update?

 

Can anyone help please?

 

Please wait more than 1 day for a response. We know you are important. But that important?

 

Sorry my bad...