Problem with navi

[Kenny1979]

Hello, I have problem with my lexus GS300awd 2005.  I try to get to secret menu with US CD and i want change units from ML to KM and I choose Australia for KM. I set this but on my NAVI screen is tittle:..PLEASE INSERTCORRECT MAP DISC..." I cant exiting this. I tried battery of, but no change. Does anyone know how to do a reset? Do i need some special combination buttons for unblocking ? I haven´t Australia CD

   Thanks very much

 

[ilv1004s]

well where is the car originally from?

i guess its a non aus delivered car