If your game files do not match the IRD signature, the game may: Crash during the "Installing" screens between Acts. Fail to boot in RPCS3. Show "Invalid Data" errors on multiMAN or irisMAN.
Are you playing on or a jailbroken PS3 console ? mgs4 ird file patched
required to wrap unencrypted game folders (JB folders) back into a fully compliant, authentic .ISO format. If your game files do not match the