TiVo Experience 3
From TiVoDatabase
TiVo Experience 3 (TE3) is the firmware used on TiVo Premiere along with TiVo Roamio and TiVo Bolt, the latter 2 can also run TiVo Experience 4. Users typically prefer the interface of TiVo Experience 3 as it has less problems than TiVo Experience 4, however TiVo Experience 3 isn't maintained by TiVo anymore and doesn't have some of the features which TiVo Experience 4 has.