Are you looking to run these files on a or a jailbroken PS4 console ?
To install FPKGs directly on a PS4 console, yes, you need to jailbreak it. To play them on a PC, you simply need a functional emulator. ps4 roms archive hot
Unlike the Nintendo Switch, which has a very mature emulator scene (like Yuzu/Ryujinx), the PS4's complex security (sandboxing, unique encryption keys) makes emulation incredibly difficult. Are you looking to run these files on