Dear all, I have 7" wm8650 model no S909 LSCX sim card slot. I need firware for that. I tried lot of options but just in vain. No sound, no sim signal bars, no wifi scanning and even touch screen does not work. It is geen led displays. Can someone suggest which ubiriod and program no is suitable for my model no. Also I couldn't get any program files and firmware for this S909 model China made.pls help me out .