How To Convert Pkg To Iso Updated -

sudo apt install xar genisoimage cpio   # Debian/Ubuntu
sudo dnf install xar genisoimage cpio   # Fedora

Because of this, we are not "converting" but rather rebuilding a digital file into a disc structure.

An ISO requires a specific parent folder. You need to rename and reorganize:

Correct structure:

BCUS98234/
├── PS3_DISC.SFB
└── PS3_GAME/
    ├── LICDIR/
    ├── TROPDIR/
    ├── USRDIR/
    └── PARAM.SFO

This creates a standard data ISO (not bootable for OS installation):

# Create a folder with the extracted contents
mkdir iso_contents
cp -R ./extracted/* iso_contents/
Old guides recommend tools that no longer work on modern Windows 10/11 or macOS. Here is the current stable toolkit: how to convert pkg to iso updated
| Tool | Purpose | Status |
| :--- | :--- | :--- |
| PS3 Disc Builder | Creates ISO from folder structure | Active (v1.8+) |
| RPCS3 | Decrypts PKG files natively | Active |
| pkg2zip | Extracts PKG on PC (Command line) | Active |
| implantisomaker | Converts extracted PKG to ISO | Legacy but functional |
| 3k3y ISO Tool | Alternative ISO builder | Deprecated (Use PS3 Disc Builder) |
Using PS3 ISO Tool:

Using command-line (mkisofs/genisoimage):
genisoimage -rock -joliet -iso-level 3 -udf -full-iso9660-filenames -allow-limited-size -o output.iso ./extracted_folder

| Issue | Solution |
|-------|----------|
| pkgutil --expand fails with "signature check" | Use --expand instead of --expand-full; or use xar -xf directly. |
| createinstallmedia not found | Some .pkg files don't contain a full installer app. Use Method B. |
| ISO won't boot on Apple Silicon (M1/M2/M3) | You need ipsw restore method, not ISO. Apple Silicon uses DFU restore. |
| ISO too large ( >4.7GB ) | Use -format UDTO for large files; split if needed with split -b 2048m. |
| Missing cpio or gunzip | Install via brew install gzip cpio or use ditto as fallback. | sudo apt install xar genisoimage cpio # Debian/Ubuntu

Do not use old PKG extractors from 2015. Use RPCS3: