A friend of mine has an old Tivo. Doesn't hold very much. He paid for the "lifetime" subscription, so he doesn't want to get a new Tivo, as he'll then have to pay monthly, or pay for another full "lifetime" subscription. I suggested that he could just get the unit he has upgraded with a larger hard drive.

I of course don't know who/how this would be done, but I know people do it/have it done all the time.

Help!