The problems are retroarch

I have 2 main problems (I use retroarch plus on Google tv)

1. one day just randomly it stopped warning me about 3 SNES games (I tried to reinstall them but nothing)

2. I don't like PS1 games. I tried to install a BIOS (I don't know if I can write which one) But I can't get him to read it. They basically crush everyone as soon as you start them before even starting the game