If you already have full PS3 ISOs, use this step-by-step method to create your own highly compressed, better-performing backups.
Do not use WinRAR or ZIP. Use 7-Zip (LZMA2). ps3+iso+games+highly+compressed+better
Optimal settings for PS3 folder format:
Example command line:
7z a -t7z -m0=lzma2 -mx=9 -ms=4g -mmt=8 "game.7z" "game_folder/" If you already have full PS3 ISOs, use
Real-world result: Gran Turismo 6 (original JB folder: 18 GB) compresses to 9.4 GB using these settings. Example command line: 7z a -t7z -m0=lzma2 -mx=9
TrueAncestor PKG Repacker can convert JB folders into installable PKG files that are inherently compressed. Use Level 9 compression for best results.
If you are searching for "Highly Compressed" PS3 games (e.g., a 20GB game compressed to 2GB), you need to know the risks: