Assuming you have legally obtained a PKG file (via PSN or a dumped disc), here is how to install it on RPCS3 or a modded PS3.
Many community guides mention downloading from the RPCS3 Quickstart Guide for legal dumping instructions. Install on RPCS3 (PC) : Open RPCS3 and go to File > Install Packages/Raps/Edats . Select your MGS4 PKG file. Metal Gear Solid 4 Pkg Download
He logged into his old PSN account. Sure enough— Metal Gear Solid 4 (PSN version) was in his download list. But the PS3 store was sluggish. Instead, he used a trusted homebrew app on his PS3 called . It scraped his account’s licenses and let him re-download the original encrypted PKG files directly from Sony’s CDN. Assuming you have legally obtained a PKG file
You can purchase and download the game digitally from the PlayStation Store. Select your MGS4 PKG file
But what exactly is a PKG file? Can you simply download, click, and play MGS4 on your PC or modded console? And more importantly, is it legal or safe?