Installing large PKG files requires significant temporary space on the PS4's internal hard drive. The external USB drive used to transfer the PKG to the console must be formatted as or FAT32 . exFAT is universally preferred due to its ability to handle single files larger than 4GB. Safety, Legality, and Best Practices
: It is fully playable on PS4, PS4 Pro, and PS5 via backward compatibility, maintaining a locked 60fps on the newer hardware. How PKG Installation Works