Comcast CableCard does not support 6 tuners

I have a new Roamio with 6 tuners. We have been getting "Channel Not Authorized" messages on many channels. A Comcast repair guy came last week and tested everything. Of course when he was here we did not get the "Channel Not Authorized" message. He was about to leave when I tried all the different turners by setting each to a different channel. We found that 4 worked fine and 2 did not. I was then able to search and found this page: http://ift.tt/1zzvkEG. It shows the firmware version needed to support 6 tuners. The cablecard installed had an older firmware version.



I was happy the problem was solved. I called today and they do not have any new cablecards and they don't know when any are coming in! So we know the issue, but there is no fix for it.



Does anyone know how I can get a newer cablecard from Comcast?



Tom