AFAIK you must call on the Premiere, you can do it for all Series 3 models (and older) by just using the TiVo Web sight.
Originally Posted by tlp95129
I have a TiVo HD that's currently grandfathered in on an annual plan. I just got a Premiere for a really good price. Is it possible to just substitute the Premiere for the HD and keep the annual plan. Would I just change the service number or would a call to TiVo customer support be needed.
3 Roamio Plus upgraded to 2Tb & 3Tb, and 2 Minis,