Check that the USB device is formatted to the File Format FAT 32 or FAT 16.
The Play Station 3 will not recognize NFST File Format.
If you update your PS3 system, the system software version will be 4.81 and the following features will be updated.
In order to download PS3 system software version 4.81, you will need a minimum 200MB of free space on either the PS3 Hard Disk Drive (System Update) or on removable storage media (PC Update).
An update to the PS3™ system software was released on November 1, 2016.
You can use this update to upgrade your system software to version 4.81.
Hocking backed up that claim with the following quote: "The [June] upgrade basically makes every Play Station 3 HDMI 1.4 compatible--that's the standard that governs 3D displays." We're inclined to believe Sony on this one, and we're looking forward to testing the upgrade ourselves.
Gamers are reporting that their PS3s are locking up after downloading Sony's latest system software update.
"We have temporarily taken 4.45 offline and are investigating the cause of the problem.
Copy the update data to the PS3™ system's hard disk drive and perform the update.
Confirm that the storage media is connected to Play Station 3 system, and retry the update process as instructed above.
You can use this update to upgrade your system software to version System Update Update using the PS3 system's [System Update] feature.
New for You can now transfer the data that is saved on one PS3 system's hard disk to another PS3 system's hard disk using an Ethernet cable (sold separately) Some games under the minis category of Play Station Store will soon be able to be played on the PS3 system.