To the zidoo tv techs: please help me, I plugged in my zidoo h6 pro - which I got just 6 months ago - and nothing on screen, no signal. I tried many tv's, many cables, the same results, no signal on tv. I reset it, nothing. I tried to flash it using the sd card method you describe, still nothing, doesn't recognize the card at all. Any help, please? Anything I can do to bring it back working? To all: Please help me.