Wololo on Twitter: "PS4 Syscon keys allegedly disclosed, could ultimately mean PS4 downgrade is possible https://t.co/beD9Qvy5eT https://t.co/XIsZeeI1pP" / Twitter
TUTORIAL] Downgrade PS4 en PlayStation 4 › Scene
TUTORIAL] Downgrade PS4 en PlayStation 4 › Scene
PS4 Firmware Revert Overview - YouTube
PS4 News - UPDATE on Downgrading systems, someone has successfully done it - YouTube