The TiVo button is in the Harmony Database. i still use my harmony codes i setup with my Series 3 boxes. they all still work fine with my Roamios. Just like they did with my Premieres. i just had to add a few buttons, like the a,b,c,d buttons from the premire. but otherwise, I've been using the same setup to control my TiVos with my Harmonies for many, many years. They work fine with my Roamio Pro and Base and my TiVo Minis.