hmmm don't know. have the 7502 bios wich seems to be pal. so it should work with it, but its unable to load bios.

Could nit ope BIOS:"/home/user/.pcsx/bios//scph7502". Enabling HLE Bios!

So i think the problem is not that the emu can't load the bios, the problem is the two // or am i wrong? maybe programming error oder something