Hello , i am new on this beautiful forum,
i have a zumo 660, and this work on my bike bmw k1600gt , but partially.
On my bike there is a multi controller wheel on left handlbar that can control some function on navigator , but only if you puchase an original bmw nav IV or the new NAV V.
If the zumo 660 is similar (or the same) of bmw nav IV i want to try to convert in bmw NAV IV .
There is someone that had just tried to do this ?
Experience ?
what are the step necessary??
upload the nav iV firmware ? where i can found it ?

Thank you in advance !!!