The PS3Xploit team, along with Joonie (of Rebug fame), have managed to make the PS3Xploit hack run on the latest PS3 firmware 4.84, through a clever modification of the official firmware.
http://wololo.net/2019/03/22/latest-...mware-release/
http://wololo.net/2019/03/22/latest-...mware-release/