1. format the SD card;
2. copy the file pa9spi.bin --- pa9001.bin ----ISP_UI sequence to SD card
3. power on, insert the sd card when enter into preview interface;
4. wait, showing be ok till " UPDATA OK CHECK UI_LIBRARY " the whole process is about 2-3mins
"check UI_library Pass" show updating successfully
5. pull out the sd card and format