Friend of mine just bought a wonderful secondhand (2004)X5 diesel . Display
shows a.o. "navigation system" , but then it says "no disk". Then I
downloaded a DVD containing the maps of the Benelux and the major roads of
Europe, version V27, and gave him that DVD. Inserting it, he got the
message: "no system disk". Now, what do I need more to get that navsytem
working for him? Kind of system disk, compatible with the V27 version ?
Please help !!!