Ps3 Pkg Archive
So you have a downloaded PKG file (and its RAP, if required). Here’s the standard installation pipeline.
The header contains metadata describing the package contents and decryption parameters. The total size of the header is typically 1024 bytes (0x400). ps3 pkg archive
| Offset | Size | Description |
| :--- | :--- | :--- |
| 0x00 | 4 bytes | Magic Number: 0x7F504B47 (ASCII: \x7fPKG). |
| 0x04 | 2 bytes | Header Type: Revision of the header format (e.g., 0x0001 for Retail/Debug). |
| 0x06 | 2 bytes | Flags: Indicates if the package is retails (encrypted) or debug (unencrypted). |
| 0x08 | 4 bytes | Metadata Offset: Usually 0x000000C0. |
| 0x0C | 4 bytes | Metadata Count: Number of metadata entries. |
| 0x10 | 4 bytes | Header Size: Size of the full header (usually 0x400). |
| 0x14 | 8 bytes | File Size: Total size of the PKG file in bytes. |
| 0x24 | 16 bytes | Content ID: Unique identifier for the content (e.g., UP0000-NPUB30000_00...). |
| 0x34 | 8 bytes | Data Offset: Absolute offset where the encrypted payload begins. |
| 0x3C | 8 bytes | Data Size: Size of the encrypted payload. | So you have a downloaded PKG file (and its RAP, if required)
PKGs are digitally signed. The console verifies the signature before installation. If the signature does not match the expected Sony certificate, a stock retail PS3 will refuse to install the package. The total size of the header is typically 1024 bytes (0x400)
One of the biggest headaches with PS3 PKG archives is the 4GB file size limit of the FAT32 file system.
Many PS3 games (e.g., Uncharted 3, The Last of Us, Gran Turismo 6) have PKG files exceeding 5GB, sometimes split into 30+ parts.