Do not you have firmware of "EX900"? I do not understand where there is it at all. . . .EX900 - 7.0 inch Touch Sreen Android1.7 Tablet PCHere is the same thing. The firmware of "EKEN" enters. However, touch panel does not change. I have another one of them. But I do not understand it where there is a driver even if I watch a file. Help it. . . .