The Vita3K wiki provides the official instructions for verifying you have the correct files. You can read the full guide here:
The verified workbin contained a single, intact file: KIRK_ENGINE_SLEEP_CYCLE.bin. vita3k workbin file verified
It wasn’t a game. It wasn’t a hack.
It was the actual power-management microcode for the Vita’s KIRK encryption engine – the chip that decrypted every licensed game. Sony had claimed this code was destroyed in 2018. But Mister Mips had smuggled it out inside a dummy workbin, disguised as a corrupted save file for Persona 4 Golden. The Vita3K wiki provides the official instructions for
Why? Because he wanted the Vita to live forever. It wasn’t a hack
You download a decrypted game dump, point Vita3K to the folder via File > Install .pkg/.zip/folder, and after a few seconds, the log window prints:
[Info] Workbin file verified for PCSB00560 (Persona 4 Golden).
You are then able to double-click the game icon and play. This is the ideal outcome.