| Myth | Truth | | :--- | :--- | | "You can downgrade using a modified USB drive." | Impossible. The USB port only reads update files, and the CPU verifies the signature. | | "Factory resetting the PS4 removes the update." | No. Factory reset wipes user data, not the system software version. | | "Swapping the hard drive downgrades the firmware." | No. The system software is stored in NOR flash on the motherboard. The HDD contains only games and saves. | | "Downgrade tools work on PS4 Slim/Pro." | All PS4 models (Fat, Slim, Pro) have efuses. The Pro is actually harder to downgrade. | | "Sony secretly released a downgrade tool for developers." | Dev kits have debug menus, but retail downgrading is blocked at the foundry level. |
Flash the patched files back to the chips and boot the console into Safe Mode to reinstall the target firmware. 2. Game Downgrading (Software Only) ps4 downgrade tool
: You typically need to find the specific JSON link for the old game version and have your console connect to the network via the tool. | Myth | Truth | | :--- |