Yes, Fujitsu Siemens seem to use the same/similar kiwi data files system as Denso & VDO Dayton. It seems Siemens are maybe also connected to VDO is some way commercially as they are to Fujitsu. The whole car DVD Navigation industry appears a little incestuous to me, but there are basic differences in how they operate which makes switching map data from one system to another very challenging. For instance, i think the other smaller kiwi files act to find and reference data in the one that probably contains all the map data, ALLDATA.KWI. As for LOADING.KWI, it would be to do with boot and no doubt is brand/unit/fw specific. Even the Denso 'C1' and 'C2' discs are not interchangeable in AU units.

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