Dat 1 dat2 dat3 are three map data files of Kay LiDE software. Because it is too big, it is divided into three file packages.

The data of the three files are different, * * * is the same as the map data.

If there are no different versions of dat 1 dat2 dat3, if there is an error, navigation or map confusion will be impossible.

I hope I can help you, and I hope to adopt it!