How?

[SifJar]

I downloaded and installed PPSSPP on my phone and was pleasantly surprised at how well it ran the cube demo ELF, but now I am trying to load some ISOs of games I have ripped, and can't figure it out; it keeps telling me it can't load encrypted binaries, but I extracted EBOOT.BIN from the ISO, decrypted it with prxdecrypter and replaced it, and it still gives the error. Is there some other file that must also be decrypted? Or am I missing something else?

Any help would be hugely appreciated.