All original "Phat" PlayStation 3 models are fully CFW compatible and can be downgraded.
Click and ensure the system displays an "Enabled" confirmation status. Method B: Using QA Toggle Habib PKG how to downgrade ps3 firmware 4.89 to 4.88
Select . This modifies your 4.89 core files to accept custom installations. All original "Phat" PlayStation 3 models are fully