It was recently revealed that a new patch will introduce Trophy support to Metal Gear 4.
Adriasang [via CVG] now report that Kojima Productions has now confirmed that the upcoming patch for will also allow players to fully install the game. Until now the data would install at the beginning of each chapter.
Metal Gear Solid 4: Guns of the Patriots was exclusively to the PlayStation 3 in 2008, making it ‘pre-trophies’ which was introduced at a later date to the Playstation 3. Players also had to endure lengthy loading times due the game being a content-rich one.