This is a "pro-level" modification that carries a high risk of permanently bricking the console if done incorrectly.
For more information on PS4 downgrading, jailbreaking, and homebrew, check out the following resources: ps4 downgrade 10.50 to 9.00
is an advanced hardware process that requires significant soldering skills and specific prior conditions. ConsoleMods Wiki The Reality of Downgrading This is a "pro-level" modification that carries a
Tools like a Teensy ++ 2.0 or a Raspberry Pi to dump and write to the system chips. If you own a PS4 Slim, the situation
If you own a PS4 Slim, the situation is drastically different. Sony changed the encryption keys for the Syscon chip in later hardware revisions. These new keys have not been publicly discovered or released. As of now, it is generally impossible to software downgrade a PS4 Slim from 10.50 to 9.00. If you have a Slim on 10.50, you cannot utilize the 9.00 exploit until a new exploit is released for higher firmwares.