The screen went black. The progress bar appeared. 0%. 10%.
This comprehensive guide covers the reality of downgrading a PS4 from firmware 13.02 to 9.00, the technical requirements, and alternative options. The Short Answer: Is a Software Downgrade Possible?
By dumping and modifying the Syscon and NOR chips using specialized hardware (like a Teensy or Raspberry Pi), you can trigger the console to boot from the previous firmware slot. ps4 downgrade 13.02 to 9.00
Because of these hardware-level checks, a standard PS4 running version 13.02 will completely ignore any older PS4UPDATE.PUP file (like version 9.00) placed on a USB drive, rendering software-only downgrades impossible. The Only Exception: The Syscon Hardware Revert Method
The PS4 has two firmware "slots" (Current and Previous). If you just updated to a firmware higher than 9.00 and haven't updated again since, your 9.00 data might still reside in the secondary slot. The screen went black
Firmware 9.00 is special because it features a unique kernel exploit known as . Unlike purely software-based exploits that came before it, triggering the vulnerability on 9.00 requires inserting a specially formatted USB device at a precise moment. This exploit, combined with a WebKit exploit called PSFree for better performance, provides kernel access to the system. The result is a relatively stable jailbreak, often cited as having a stability rate around 95%.
To force a downgrade, enthusiasts use a method that involves "tricking" the console's security chips: Hardware Interfacing : Users must open the console and solder wires to the (System Controller) chip and the The Teensy/Arduino Bridge : A microcontroller like a Teensy 2.0++ By dumping and modifying the Syscon and NOR
The tiny solder points on the PS4 motherboard are extremely easy to damage. Conclusion: Should You Do It?
: Attaching a specialized tool, such as a Raspberry Pi Pico , directly to the Syscon chip pins.
Sony, however, continues to push security updates. As of late 2025 and early 2026, the current live firmware is (or higher). This update primarily patches security exploits and improves system performance.