I apologize ir this has been discussed but I haven't seen it. I recently pulled out an old HDVR2 receiver with the 3.1 software and was going to try to update to 6.4. A couple of questions. When I hooked it up it tries to gather info from the satellite but it never gets past 79%. I had it hooked up for several days and still 79%. Does anyone know if the satellite and 3.1 is even compatible anymore. Is it possible to use this unit without a new hard drive? If it is compatible will the 6.4 ever down load to the unit with 3.1 or does the unit have to have the 6.2 do upgrade? Thanks for all the help I have received over the years.