I selected several 'favorite' channels on my TV remote (Hannespree) but then the cable company changed stuff around and the channels no longer exist where they were.

The problem this creates is that I need to get to the now non-existent channel in order to remove it from the 'favorites'. But of course I can't get there anymore.
Where are the 'favorites' stored? I've unplugged the TV and removed the batteries from the remote but when I power up the favorites haven't changed.