Advertisements My promo is expiring with Comcast so I checked out their web site found the same exact deal I’m on now and tried to sign up and was told I need to return my CableCards and get a $5 box (or use the Comcast app on one of the approved third party devices) to get the promo. I’m currently chatting with Comcast on Twitter and they are saying pretty much the same thing. Some promotions require “upgraded equipment”. I know some channels are IP only and won’t tune with cards, but I don’t watch those so I don’t care. It sounds like though that Comcast won’t let you subscribe to a channel package in a promo that includes said channels, even if you are already subscribed to.