Where shall I start? Taking the bike offroad requires tracks that are not part of the tomtom map. I naivly imported tracks to tomtom but it didn’t work as the software was overwriting the track points and adjusted them to the map. So offroad became onroad. As it turned out tomtom onroad files are .itn extension and called routes, tracks are .gpx extensions. Those two for reason only ‘nown to tomtom it guys can not be stored on the same strorage i.e. one can be on the internal storage the other one must be on an sd card. (Really stupid as if you couldn’t have excel and word on the same hard drive at you pc/mac.) anyway i put the brand new sd card in to tom formatted it then it was not visible by either the device itself or the pc. Tomtom support suggested the solution the card needs to be fat32 formatted. Done. Card visible ...gpx file put on the card...yet the bloody device again produces and onroad version of the originally off road track. long story short I reformatted the card again with fat32 and now the card is not visible again. Also did the factory hard reset. Nothing works. Anyone any idea?