Open your converter tool and select the PS3 source. You will need to provide a "Title ID" for the new PS4 app (usually starting with CUSA).
works universally for retail PS3 games like The Last of Us or Uncharted 2 . ps3 to ps4 pkg converter verified
The PS4's backward compatibility with PS3 games is limited, and not all PS3 titles are natively compatible with the PS4. To play PS3 games on the PS4, users typically rely on the PlayStation Now streaming service or purchase remastered versions, if available. However, these options may not always be feasible or desirable. A PS3 to PS4 pkg converter offers a solution by enabling users to convert their existing PS3 PKG files to a format compatible with the PS4. Open your converter tool and select the PS3 source