How to Downgrade PS4 from 10.50 to 9.00 Tutorial (New Update) - YouTube
Abkarino on Twitter: "Good job, but to clarify something important to the # PS4 scene community, the PS4 Downgrade is not like PS3 downgrade yet, you can not downgrade your console until you
Malaysia PS4 Jailbreakers - PS4 Firmware Downgrade : Possible? There is a way, which is with the official JigKick, but since nobody has access to the tools, it's unlikely it'll ever leak