Hi guys, my brother has purchased one radionav used for his Juliet and now he has need of the master code...

Someone of you would know give me some info about it...?

Despite having done a bit of research on the basis of the model and with the serial port of the nav, on the MM practically does not find anything, but this is not the case for Blaupunkt, Becker or Bosch.
It would seem that in the case of Magneti Marelli is the only is go in the dealership... it is really so...????