:((Strange: though familiar with Oruxmaps/mapfiles and map-copy, I don’t succeed right now with a new Androidapp. to copy a gmapsupp.img file, (obtained from OSM, generic-routable(selfmade, http://garmin.openstreetmap.nl/)))), into the .mapfiles of Oruxmaps in the Android, the unzipped file can be transported though but happens to be unusable, ofcourse. Thanks a lot for an answer, if there may be one, don’t understand, it should work(according to OpenFietsMap:in the case you can read dutch: http://www.openfietsmap.nl/news/openfietsmapandroid.
Just found the ultimate answer: unpack the .zip files, please before handling!