This guide is for educational and informational purposes only . Downgrading a PS4’s firmware is not officially supported by Sony and may violate your device’s warranty or terms of service. It can also lead to a permanent console brick (unusable state) if done incorrectly. Proceed at your own risk.
It is physically possible to downgrade a Go to product viewer dialog for this item.
: A Teensy 2.0++ or an ESP32 for communicating with the console chips.
PS4 CONSOLE ON 13.02 FIRMWARE- LET'S REVERT IT TO 12.02! - YouTube. This content isn't available. YouTube · FixmyConsole
These do not exist and are highly likely to be malicious. Dangerous (Risk of malware/scams)
If your console is currently on Firmware B, the inactive backup slot likely still contains Firmware A (the version you were on immediately prior to the update).