How To Downgrade Ps4 9.60 To 9.00 -

Warning: Downgrading your PS4 may void its warranty and potentially brick the device. Proceed with caution and at your own risk.

The PS4 motherboard contains two "slots" for firmware: one active and one inactive. When you update from 9.00 to 9.60, the system installs 9.60 into the inactive slot and then swaps it to be the active one. The old 9.00 firmware remains in the other slot until the next update overwrites it. Requirements for Downgrading how to downgrade ps4 9.60 to 9.00

How to Revert the PS4 to a Previous Firmware (Full Tutorial) Warning: Downgrading your PS4 may void its warranty

• SAMU (System AMU): The PS4 has a System Application Management Unit that tracks the "Minimum Version" (MinVer) of the firmware.
• One-Time Programmable fuses (e-fuses): Every time you update from 9.00 to 9.60, the console physically burns a microscopic fuse inside the chipset. When the console boots, it checks if the firmware version matches the state of the fuses. If 9.60 fuses are blown but you try to boot 9.00, the console will hard brick (refuse to boot entirely).