Here you mentioned you have standard TiVo:
Go into the standard TiVo menu, make your way to remote programming, under your tv brand, write down the codes, then try them in your weaknees Thr22 remote.
What is the brand of tv anyway?
To enter codes into the THR22 remote:
1. press and hold TiVo & TV power, until the light remains on
2. enter the tv code