This article breaks down why a software-only downgrade does not exist and the advanced hardware-based that is currently the only way to get back to 9.00. The Big Question: Is There a Software Downgrade?
, you can manually patch the Syscon and flash the Nor chip to "roll back" to the previous firmware. The Catch: This only works if your downgrade ps4 903 to 900 fix
Temporarily lifting pins on the Syscon chip to put it into debug/glitch mode. Using a hardware flasher (like a Teensy or specialized PS4 Syscon Tools ) to patch the chips. This article breaks down why a software-only downgrade
This requires opening the console and soldering wires to the Syscon and NOR chips on the motherboard. The Catch: This only works if your Temporarily
The PS4 motherboard stores two firmware versions in different slots: the version (current) and the Inactive version (the previous one you updated from).