: You cannot use part1 by itself. You must download every single part in the set (e.g., part1, part2, part3, etc.) and keep them in the same folder.

: If you get a "Checksum Error" during extraction, one of the parts is likely corrupted. You may need to re-download the specific part mentioned in the error.

: Likely refers to the base version of the game or a specific update/patch version.

: The game title, specifically the North American (US) region version.

If you are having trouble with a specific error message during extraction or installation, let me know: What are you seeing? Which firmware version is your PS4 running? Are you using WinRAR or 7-Zip ?