Lifted from different model units maybe, with different map part numbers? Afaik, the .db file name always matches the map Part No. The map info shown in Post #1 has P/No. 010-11288-03 in the Header, macthing the .db file name from kenta2's post #16. What's the Part No. in the map from Rog's Post #14? The name of the .db file name should need to match the map part no for it to work.