Until a pure software method exists, the for 9.03 → 9.00 is:
[1] Select PS4 Firmware: 9.03 → 9.00 [2] Choose 9.00 PUP file: C:\firmware\PS4UPDATE.PUP [3] Connect PS4 via USB cable (Bridge mode) [4] Click "Start Downgrade" → Status: "Sending webkit payload to 9.03..." → Status: "Kernel exploit succeeded" → Status: "Disabling anti-rollback..." → Status: "Flashing 9.00 – DO NOT POWER OFF (12 min)" [5] Done! PS4 will reboot to 9.00. downgrade ps4 903 to 900 fix
How to Revert the PS4 to a Previous Firmware (Full Tutorial) Until a pure software method exists, the for 9
Instead of downgrading, wait for the exploit to catch up. Historically: Until a pure software method exists