The following steps outline how to perform a conversion using standard desktop software like :

Use tools like pkgdecrypt or PS4 PKG Tool (depending on the console) to decrypt the .pkg .

Use when you need an ISO that behaves like an installer disk (requires authoring a bootable installer or packaging payload into a macOS installer volume).

These are container files that hold installation scripts, assets, and metadata. On macOS, they install software directly to the operating system. On Sony PlayStation consoles (PS3, PS4, PS5), they represent digital games, updates, or downloadable content (DLC).

If you have downloaded a macOS installer from Apple in .pkg format (like InstallAssistant.pkg ), you can convert it into a bootable ISO file. This is useful for making a bootable USB drive or for using it with virtualization software.

How to Convert PKG to ISO: Updated Guide for 2026 Converting .pkg files to .iso format is a common requirement, particularly for users looking to manage or backup PlayStation 3 (PS3) game files, or occasionally for specialized macOS installers.

Converting a PKG to ISO is straightforward, usually requiring extraction and re-imaging. By following the steps in this updated 2026 guide, you can handle most file conversion needs for emulation or installation.

For 99% of users: .