In the context of PS3 homebrew and backups, a file is a package installer. A "patched" PKG specifically refers to a version of the game that has been modified to include the latest updates, patches, and sometimes, DLC unlocked by default.

If the installation stops or says the data is corrupt:

If you are looking to revisit the game via a patched PKG installation, here is a refresher on the content you will be able to access:

: The game requires an internet connection for all content, including "single-player" modes like Garden Ops. Technical Issues

To understand the necessity of the file, you must first understand the history of the PS3 release. Garden Warfare was released physically on disc and digitally on PSN. However, in 2018, EA shut down the online servers for the PS3 version.