What is the currently listed in your system settings?
The short answer is However, the technical answer is more nuanced, involving hardware modifications, backup chips, and strict system limitations. Why Software Downgrading is Impossible
Is a PS4 Downgrade from 13.02 to 9.00 Possible? A Technical Explainer
. Sony's internal console security utilizes hardware fuses, a non-volatile flash memory chip called the NOR chip , and a system controller chip called the Syscon to explicitly block older firmware installations from running. ps4 downgrade 13.02 to 9.00
Technically, a downgrade is not entirely impossible—it is simply impractical for consumers. In specialized repair or modding scenes, advanced users can desolder the PS4’s NAND flash chip containing the system software and write a raw image of a 9.00 firmware dump using a hardware programmer (e.g., a NAND flasher). This process, called a “hard downgrade,” also requires matching the console’s unique encryption keys and bypassing the fuse check, often by spoofing the fuse count in the bootloader. However, this is extremely risky: one wrong voltage or misaligned solder joint can permanently destroy the console. Moreover, after such a procedure, online services like PlayStation Network (PSN) become inaccessible due to mismatched authentication tokens. For firmware 13.02 consoles produced after 2022, the hardware design further integrates security measures, making even hard downgrades nearly impossible.
Any website or tool claiming to "downgrade" your firmware via a simple USB update or DNS change is a scam .
: Solder thin wires from your flashing hardware device directly to the tiny pins of the Syscon and Nor Flash chips. What is the currently listed in your system settings
: The exact system version you used immediately before your last system update.
: If your previous version was 9.00, some specialized repair shops may offer a hardware downgrade (Revert) service, though it is often more expensive than just buying a different console. Downgrade ps4 13.02 to 13.00? - Facebook
: A "revert" is theoretically possible only by using advanced hardware modification techniques, such as soldering and using an external programmer to flash a backup of the system's previous state. This requires that you already made a hardware backup of your console's unique files while it was still on version 9.00. Current Limitations Software Methods A Technical Explainer
If you bought a PS4 that was already on 13.02, or if you updated past 9.00 a long time ago, the 9.00 data is permanently overwritten. For 99% of users, this method is unavailable. Why People Want Firmware 9.00
How to Revert the PS4 to a Previous Firmware (Full Tutorial)
The PS4 operating system checks the version number of any update file (PS4UPDATE.PUP) against the currently installed version. If the file is older, the system rejects it immediately.