The number holds a near-mythical status for two reasons:
On your PS3, navigate to > Package Manager > Install Package Files > Standard . Select and install the 103 Mod PKG. 2. Activate the Placeholder License ps2 classic placeholder 103 mod pkg
Select the PKG file and wait for the installation to finish. A new PS2 icon will appear on your XMB. 3. Encrypting and Loading Games The number holds a near-mythical status for two