Here is the official information for downloading .
As of 2025, the latest official firmware version for PS3 is 4.91 . However, version 4.86 was a legitimate past update (released in 2019). You can still manually install 4.86 if needed, though updating directly to 4.91 via the internet is recommended. Download Link for Update 4.86 You can download the PS3UPDAT.PUP file from Sony’s official servers (direct link): ps3 system software update 4.86 download