| Claim | Reality | |-------|---------| | "Download this tool to downgrade 9.03 to 9.00" | Scam or virus | | "Update blocker prevented 9.03 – I'm still on 9.00" | That works before updating, not after | | "Hardware downgrade from 9.03 to 9.00" | Extremely advanced, requires soldering + syscon flash + donor 9.00 fuses – not for normal users | | "Sony allows official downgrade" | No, never |
The PS4 stores its previous firmware version in a backup slot on the Syscon chip. By using a Raspberry Pi Pico downgrade ps4 903 to 900 fix