Installation method: \x0d\ 1. Navigation SD card must be formatted first; \x0d\2。 Decompress the kailide map package on the computer to obtain the "NaviOne" folder, and copy the "NaviOne" folder to the SD card with a card reader; \x0d\3。 Insert the SD card into the navigator, press the navigation button on the panel to start, and it will be OK.