The grey screen is output from the DTV box. The older software would have a black screen when switching channels. It is changing to a grey screen. If it is locking up, make sure it is on a channel that they have. if you change to a channel that is not on their package, it will be a grey screen. If it is locking up on Grey, I would guess it is the sofware issue. Also check to see if box is over heating.
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