You can only revert to the version you were on immediately before updating to 13.02.
Let’s do the math:
: Sony implements security checks in the system’s Syscon (System Controller) chip to block the installation of any firmware older than the current version. ps4 downgrade 13.02 to 9.00
The rain was still pouring outside, but inside, the storm had passed. The downgrade was complete. He had successfully turned back the clock, trading the safety of the present for the freedom of the past.
Options like "Initialize PS4 (Reinstall System Software)" in Safe Mode will only reinstall the current firmware (13.02) or a newer one; they cannot install an older version. You can only revert to the version you
To go all the way back to 9.00 from 13.02, your console must have sat on firmware 9.00 immediately before you updated to 13.02, without any intermediate updates (like 10.00, 11.00, or 12.00) in between.
Firmware 13.02 burns a specific set of fuses that are not present or are less advanced in version 9.00. Downgrading would require resetting these fuses, which is physically impossible without specialized equipment and direct hardware modification (e.g., replacing the Southbridge chip entirely). For the average user, there is no software method to circumvent this. Thus, any claim of a “downgrade” from 13.02 to 9.00 via a simple USB drive or software tool is fraudulent. The downgrade was complete
"End of the line, big guy," Elias whispered, picking up the controller. On the screen, the familiar dynamic theme of God of War was paused. But Elias wasn’t playing God of War tonight. He was playing a much more dangerous game: Firmware Roulette.