The official PS3 System Software Update 4.89 was released on May 10, 2022
, primarily to enhance account security by requiring device passwords for sign-ins. Official Download & Installation ps3 system software update 489 download link
Yes, as of 2025, firmware 4.89 is the final official version. Sony may release another legacy patch in the future, but currently 4.89 is the latest. The official PS3 System Software Update 4