Install the official PS3 Firmware ( PS3UPDAT.PUP ) via the emulator's menu.
Downloading "highly compressed" PS3 ISO games is generally by the community because standard PS3 ISO files are already compressed . Many sites claiming to offer "highly compressed" links for large games often provide non-working files, split archives that are difficult to rejoin, or even malware. For the best experience, you should look for verified, standard ISOs or PKG files from established sources. Community Perspectives on PS3 Game Formats ps3 iso games highly compressed link