Hey everyone. Just needed a bit of help since I have been trying this for days and I cannot get it to work. I built myself a Retropi. Everything is working fine on it so far with one exception. That being Playstation One games. I know a BIOS is needed to get them to run, and I have tried many different BIOS packs from other threads on this site that do not work. I am using RetroPie Manager to upload the BIOSs but everyone I have tried says it is invalid. I need valid ones for SCPH1001.bin, SCPH5500.bin, SCPH5501.bin, and SCPH5502.bin to work with my Retropi. Has anyone got this running correctly, and can maybe link me the files I am needing?