I have a d2pro v3 and i want to update the fw to 2.3 so it fixes my inching problem on my d2c. i installed the drivers and it all seems to be fine windows does say to use usb 2.0 port for faster transfter even thought my computer only has usb 2.0. when i run the program it does nothing says something like programmer firmware _ and i cant type anything. anyone know how to fix this ?