Portable navigator can not boot, how to solve? Click on the screen does not respond.
The memory card format is no problem (I can not think of any good way).
There is what I would like to recommend the use of mobile navigation, more convenient to use, but also free of charge, such as Baidu maps, Google maps.
You belong to the system software is lost, it is necessary to re brush machine, Baidu search under the corresponding model of your machine brush program, you are far from the peak program
