1 fisrt inset min SD card
2 open --- iuw1.2(Tool)
3 open-------IUW1.2
4 choose boot disk on the left and then browse to the software f117_en.ius and choose a SD card drive , then burn
5 when it finshed, take out the SD card, put the sd card into mid, and power on the dive, when it start, then press back, then start to update the software, then it finished, take out the SD card.
jgmagic