He thought it was a hack. A cruel prank. But the timestamp on the message was from ten minutes ago. And it bore a digital signature verified by PSN’s own servers—impossible to forge.
The PS3 system software update 4.86 was released on August 12, 2019. According to the official PlayStation blog, this update improved system stability during gameplay. ps3 update 4.86
Here is the guide for updating via USB, which works for either the current official version (4.90) or a specific version (4.86) if you have the file. He thought it was a hack
Leo ran a small retro-gaming repair shop in a basement flat in Chicago. His specialty was reviving dead consoles, but his heart belonged to the PS3—specifically, a launch-day 60GB model he’d nicknamed “Greybeard.” It was a tank, loud as a vacuum cleaner, but it still ran Metal Gear Solid 4 without a hitch. When 4.86 popped up on his screen, he shrugged and hit “Accept.” And it bore a digital signature verified by
Leo grabbed his controller. At 2:55 AM Sunday, he launched LittleBigPlanet . The level loaded, but it was different now. The skybox was a star map that matched the night sky above Chicago. The pews were filled with silhouettes—other PS3 players who had taken the update, their consoles now lit at odd hours, drawn by the same invisible signal.
However, if you specifically version 4.86 (commonly used for installing Custom Firmware/HEN on models that cannot use 4.90 yet, or for specific downgrading tools), you will need to find the specific 4.86 PUP file from a third-party archive.