Simply put, I installed RetroArch from the official Cydia repo, attempting to load a PS1 game, and RetroArch instantly crashes. My “scph1001.bin” BIOS file is located within .RetroArch. This happens with all of the games (just two of them) that I tried.
I remember using RetroArch with my old iPhone 5s last year and it worked extremely well.
No idea what to try, even after searching…