Portable navigation Kay map with what version?
From your description of the situation, you can use the GPS navigator C-Car version of Kelid, that is, using the wince system, and thus continue to download the C-car version can be. In addition, the C-car version of Kelid is divided into standard and HD two, pay attention to distinguish. HD can use the Standard Version, but the standard can not use HD version, because the standard version of the navigator's processing chip can not deal with the HD version of the map.
So you say, portable navigator is not a true portable navigation, portable navigation and PDA size is almost, slightly larger than the phone. You should use the GPS navigator, the screen from 3.5 inches to 7 inches. GPS navigator generally uses the CE system, and the use of navigation systems used by the vehicle is almost the same, so part of the map can be generic.
PND is PDA + GPS means, C-Car car exclusive navigation version, does not support the use of portable navigation and mobile phones, so you should download the PND version