A PKG file is an official PlayStation archive format used to distribute games, updates, downloadable content (DLC), and applications via the PlayStation Network (PSN). When you install a PKG file on a PS3, it unpacks the assets directly into the console's internal hard drive ( dev_hdd0/game/ ), making it accessible right from the XMB (XrossMediaBar) menu. PKG vs. ISO/Folder Formats
Ensure your USB drive is formatted to FAT32 . lego jurassic world ps3 pkg