Advertisements I have a bolt 500 4 tunner box (Not the OTA only ) that was suppose to be compatible with the OTA, but let me say its not. My media computer with a Haupauge dual tuner gets all my signals very strong where as Tivo gives V53 error . I tried the following antennas on the roof . Clear stream 2 antennas direct DB4 DB8 and a RCA highly rated atntenna all were tested with and without a preamp (no splitters) . most my Towers are within 40 miles. Knowing it would void any warranty is it possible to replace the tuner in it with one similar to the new ota Bolt or even the old tivo HD duel tuner. I do use the Moca mini feature. I am ready to give up on Tivo but having the mini Moca feature seams to be Tivo only feature.