For unit ID., follow the pictures.
For maps. in M10.
You can put .img file in
My Storage\system or
My Storage\map
and jcv file in
My Storage\map\jcv
(M10 may get map drawing performance problem if you use multiple maps or jcv files at the same time,)
For maps. in SD Card.
You can put .img file in
Storage card\map
and jcv file in
Storage card\map\jcv
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