I have 2 811 Receivers, one is a JVC 811 and the other is the Dish Network 811. The JVC has 263LADD-N Software and the Dish version has 263LABD-N. Anyone know the difference between the B and D? I asked advanced tech support and they said they didn't know, it was an engineering department code that they don't get involved with! Could it be a hardware difference? I doubt if the insides are any different due to the logos on the outside. they probably just slap different logos on them for marketing purposes.