Nevertheless I forgive only three stars because the update of the road map a computer with Windows requires. So you are forced to install a software named NAVIGON Fresh, which runs only on Windows and ultimately has only the function of the data to feed smartcard. This is quite incomprehensible, because you also could provide as a download, the road map differently. Why does it have to be a platform bound application? Access to the smart card is also obtained through a normal card reader.
So, for systems with Linux and MAC as the only operating system can not be an update of the maps.