Therefore, there is no official "PS4 PKG" file available on the PlayStation Store. When users search for a "Gran Turismo 4 PS4 PKG," they are typically looking for the wrapped for installation on a hacked/modded PS4.
Because of this, many enthusiasts argue that creating a for personal archival use falls into "abandonware" gray territory – though legally it remains copyright infringement. Always keep your original disc and dump your own BIOS. Gran Turismo 4 Ps4 Pkg