If multiMAN asks to "Fix Permissions" or detects that the EBOOT is modified for a lower firmware, select to allow the homebrew manager to automatically configure the game hooks. Troubleshooting Common Errors
When a PS3 game executes, the system decrypts the EBOOT.BIN file using specific encryption keys tied to the system firmware version it was built for.
: Often, the internal metadata of the game must be edited to lower the "System Software" requirement from the default (typically 4.30+) down to 3.55.