Use a hardware flasher (like a Teensy or Raspberry Pi) to dump your NOR and Syscon flash.
It allows for reading, writing, and patching the console's firmware chips. ps4 tool downgrade v1.00
After the tool completes its task, the console will reboot into Safe Mode, asking for a USB drive containing the target firmware. Risks and Warnings Use a hardware flasher (like a Teensy or