If you're trying to save hard drive space on a jailbroken PS3, look into (e.g., PS3 ISO tools, external USB loading) rather than "highly compressed" executables—those are almost always scams.
While some modders have successfully "shrunk" GTA V to as small as , these are not the full game: Asset Stripping Gta V Ps3 Highly Compressed
A: No. Absolutely not. The PS3’s security will reject it immediately. Do not waste your time. If you're trying to save hard drive space
: The base game occupies approximately 17 GB to 18 GB . look into (e.g.