Sorry I don't understand what you did and what you want to achieve, from your screen (n1) I can see Gmaptool doesn't recognize your file as a valid file.
Cant you follow step by step the tutorial I linked earlier in another thread you posted?
here [Only registered and activated users can see links. ]
You must have Cgpsmapper free version installed,
you must import in Gmaptool the gmapsupp.img, select split for MS.... etc. Follow the tutorial please.
Spoiler: screenshots

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