If it is the way to plug the Navigator, the SD card out, read with the computer, the latest version Chemleader car navigation main program navione download to http://www.xdowns.com/soft/23/115/2014/Soft_129884.html
This is the Navione folder, copied to the SD card overlay, is the latest main program
Model c2481c7h063121j0h
Resolution 800X480
Default GPS port COM2 baud rate 9600
If you need to modify the port please use: The latest Chemleader GPS port and baud rate, configuration modification tool
If you don't know what your port is, use this check: the onboard navigation port baud rate resolution signature Detection Tool
Main program Update Time July 25, 2014
This time, also need the latest Chemleader map package: http://www.xdowns.com/soft/23/115/2014/Soft_129889.html, great, 3 G
After downloading, 10 files are placed in the Navione folder.
In your car navigator running the main program is to upgrade to the latest version of the map.