Becker BE6105 Instructions

I would really like to obtain a copy of the Operating Instructions for the Becker BE6105 Radio in my 2006 F430F1. I don't need an original manual, as I am not trying to replace missing OEM stuff. I simply need to know how to operate the radio. Somehow I managed to engage the MUTE function on the radio and now I can't get it to UN-MUTE. I never listen to the radio when I'm in my car, but I have a thing about making sure everything in the car works as advertised (what I call "full systems capable").

If anyone can provide a copy of this manual I would be grateful. It doesn't matter if it is in .pdf format, printed out (of course I would pay for the expense), handwritten, whatever. I just need to learn how this thing works. It is quite counter-intuitive.

Many Thanks