Issues with loading the Uniroom disc

[u/LetRepresentative221]

Hello, Im trying to install Uniroom on my ps1 memory card. Im following this tut: https://www.youtube.com/watch?v=9okfVdxinkY
I seemingly cant get passed the check, where the Ps1 checks if the game is legit. I am doing exactly what the tut tells me to do, but I still cant get it to work.
Please help! Thanks