PlayStation 3 (PS3) PKG files are package files used to install games, updates, and applications directly onto a modified console. Understanding how to use them unlocks the full potential of your legacy hardware. What is a PS3 PKG File? A PKG file is a compressed package format used by Sony.
Are you trying to transfer files via or over a network (FTP) ?
The ultimate guide to PS3 PKG games covers everything from installation to troubleshooting.
Ensure the drive is formatted to FAT32 with an MBR (Master Boot Record) partition table, not GPT.