If you absolutely need 9.00 features, your only safe option is to find a used PS4 that still has 9.00 or lower.
If your console was on version 9.00 immediately before updating to 9.03, version 9.00 still physically exists inside your console's flash memory. By modifying the Syscon registry and rewriting the sflash chip, you can trick the console into booting the previous slot. downgrade ps4 903 to 900 fix
You will need to solder wires to the SYSCON UART points and, if necessary, the NOR chip points on the motherboard. If you absolutely need 9
If your console has not been factory reset, hard-drive swapped, or updated a second time past 9.03, the 9.00 files still rest inside the secondary slot. The "fix" requires manually patching the chip to trick the motherboard into booting from the previous firmware slot. Hardware and Tools Required You will need to solder wires to the