I'm trying to update the firmware on my Grandma Digital 2. I have everything downloaded, but the PAD Product Tool isn't recognizing the USB device that is connect. I've been playing with it every way I know how, even updated the PAD (which doesn't work either, because it tells me that the firmware in invalid but it works if I don't update the PAD). I don't know what else to do, I'm tried of sitting here looking at the computer. Someone please help.