Ps3: To Ps4 Pkg

This process is technical. Follow carefully.

Version: 1.0
Platform: Windows / Linux (Python + command line)
Output: PS4 Fake PKG (installable via Debug/HEN)

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CUSA12345/
├── sce_sys/
│   ├── param.sfo
│   └── icon0.png
├── eboot.bin               # Stub loader (launches PS3 ELF via an emu or redirect)
└── ps3_data/               # All original PS3 USRDIR files go here
    └── (PS3 game files)

The PS4 utilizes a specialized emulator (identified internally as ps2emu) to run PS2 games. The PlayStation Store sold PS2 classics wrapped in a PS4 .pkg. ps3 to ps4 pkg

Limitation: This applies strictly to PS2 games, not PS3 games.

import os, json, shutil, subprocess
def convert_ps3_to_ps4(ps3_path, title_name, title_id):
ps4_root = f"output/title_id"
os.makedirs(f"ps4_root/sce_sys", exist_ok=True)
os.makedirs(f"ps4_root/ps3_data", exist_ok=True)
# Copy PS3 USRDIR into ps3_data
shutil.copytree(f"ps3_path/PS3_GAME/USRDIR", f"ps4_root/ps3_data/USRDIR")
# Create param.sfo
create_param_sfo(title_id, title_name, ps4_root)
# Copy stub eboot
shutil.copy("templates/eboot_stub.bin", f"ps4_root/eboot.bin")
# Run gengp4
subprocess.run(["tools/gengp4.exe", ps4_root])
# Build fake pkg
subprocess.run(["tools/pkg_ps4.exe", "--fake", f"ps4_root.gp4"])

def create_param_sfo(title_id, title_name, path):
# Use orbis-pub-cmd or manual sfo generator
sfo_data = 
"TITLE_ID": title_id,
"TITLE": title_name,
"VERSION": "01.00",
"FW_VERSION": "0550"
# Write binary param.sfo (simplified - real tool needed)
# ... This process is technical
if name == "main":
with open("config.json") as f:
cfg = json.load(f)
convert_ps3_to_ps4(cfg["ps3_path"], cfg["title_name"], cfg["title_id"])

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Always check the PS4 Homebrew Compatibility List before starting a conversion.

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