Latest TiVo TCD8F6000 user agents:

User Agent	Browser	Platform
Opera/9.80 (Linux mips) Presto/2.12.407 Version/12.51 , TiVo-Device/b-tcdclient-harmony/2013.12.17-2041 (TiVo, TCD8F6000, wired)	Opera 12	Opera TV