To play downloaded games via USB, your PS3 must first be modified to run "homebrew" applications.
Playing games from a USB drive on a PlayStation 3 (PS3) is a popular way to preserve the console's aging Blu-ray drive and expand its storage capabilities. While the PS3 does not natively support running full game backups from external drives, modern homebrew solutions like and Custom Firmware (CFW) have made this process accessible. Understanding the Basics playstation 3 games download usb