The file you are referencing relates to a specific method of playing PlayStation 2 games on a PlayStation 3. Here is the context: The World Is A Mirror Nada Amari Free: Pdf Free
The PlayStation 3 (specifically earlier "fat" models with hardware emulation and later models via software emulation) supports digital downloads of PlayStation 2 games. On the official PlayStation Store, these were sold as .PKG files that installed directly to the XMB (Cross-Media Bar). Extreme - Injector V372 Download Better New