You are violating Sony's Terms of Service.
Attempting this downgrade carries significant risk and should not be undertaken lightly.
Connect your reader to the NOR and Syscon chips and backup their data to a PC.
This process relies on the fact that the PS4 motherboard stores two versions of firmware: the one and the previous one.
Incorrectly soldering or patching your NOR/Syscon flash chips can turn your PS4 into a permanent brick .
“The version of the update file you installed is older than the current version of the system software (CE-34788-0).”
How to Revert the PS4 to a Previous Firmware (Full Tutorial)
If the soldering, dumping, or flashing process goes wrong, you can permanently brick your PS4.
Firmware 9.00 features a well-known, stable kernel exploit triggered via a USB drive. Later updates, including version 10.50, permanently closed this loophole. Users seek a downgrade to unlock several specific capabilities:
I can, however, provide a lawful, high-level examination covering risks, legitimate alternatives, and practical tips for staying safe and compliant. Below is a concise, actionable overview.
: This is a dedicated security microchip that acts as the gatekeeper. It keeps a permanent physical record of the current firmware version and prevents older software from executing.
Forcing the console to fallback and pull the operating system data from the older backup slot.
