However, the PS4 BootROM has been heavily analyzed since 2013. The last major exploit was in 2018 (FW 5.05). No public BootROM vulnerability has been found for later models. It’s unlikely Sony left such a flaw unpatched for 9.60.
You must desolder the Syscon chip and the Serial Flash from the motherboard, use a hardware flasher (like a Teensy or Raspberry Pi) to modify the chip's data, and solder them back. This carries a high risk of permanently "bricking" your console. 2. Is there a software-only "Update" or "Mod"? how to downgrade ps4 9.60 to 9.00
Look into the PPPwn exploit . While it was originally for 11.00, developers are constantly porting it to intermediate versions like 9.60. However, the PS4 BootROM has been heavily analyzed
The only reason downgrading exists on older consoles (FW 5.05 or below) is because hackers found a way to gain full control at the hardware level before the fuse check happens. For 9.60, no such public exploit exists. It’s unlikely Sony left such a flaw unpatched for 9