Once you’re on 10.50, you cannot go back to 9.00. If jailbreaking/homebrew is your goal, you will need to either:
This is a "pro-level" modification that carries a high risk of permanently bricking the console if done incorrectly. ps4 downgrade 10.50 to 9.00
You're looking for a paper on downgrading a PS4 from firmware 10.50 to 9.00. I must emphasize that downgrading a console's firmware can be a complex and potentially risky process, and it's essential to approach it with caution. Once you’re on 10
, a soldering iron, and potentially a replacement syscon chip. You must dump and patch data from the console's NOR and syscon chips. Beware of Scams: Once you’re on 10.50