No court has ever prosecuted someone for downloading firmware for an obsolete console. But downloading a fake "BIOS" file that contains malware will hurt you, legally (if you spread it) or personally (if you get hacked).
Once you have downloaded your PSVUPDAT.PUP file, follow these steps to get your emulator up and running: Launch the emulator on your device. Firmware Installation: Navigate to File > Install Firmware . download psvita bios full