I have a DTR700 that I was trying to update to the latest firmware. It stopped on the DOS pop up at 69 percent for a hour (the main firmware update screen said it was updating the keyboard). So I took it out of the cradle and put it back in. Still didn't do anything. I turned it off and back on. The display now doesn't work, I can't get it to be recognized by the firmware update tool or CPS. It still turns off and on, transmits and receives, but the display is blank. Is there any way I can revive this radio to work fully again? Is there any sequence I can force it into a firmware update mode to restart the firmware update process?