Before downloading anything, ensure your console is properly jailbroken with firmware version 9.00 through 11.00, as PKG files will not function otherwise. Familiarize yourself with the installation methods described in community guides, starting with the USB method for simplicity before exploring network installation options.
Move the downloaded .pkg file directly to the root directory of your USB drive (do not put it inside any folders). juegos pkg ps4 descargar sites