Ps4 Downgrade 10.50 To 9.00 |link|

The PS4’s boot ROM verifies the firmware signature and version. Downgrading would require forging Sony’s private key – currently impossible.

You must solder wires to the motherboard to read and patch the NOR and Syscon chips. ps4 downgrade 10.50 to 9.00

your current one. If you updated from 10.01 to 10.50, you can revert to 10.01. To reach 9.00, your console must have been on 9.00 immediately before the 10.50 update. No Software-Only Fix The PS4’s boot ROM verifies the firmware signature