Things You'll Need
Instructions
Open the USB drive in "Computer." Right-click inside the drive's folder and select "New," then "Folder." Name it "PS3."
Create a new folder inside the "PS3" folder called "UPDATE." The folder must be in all uppercase letters for the PS3 to recognize it.
Download the update from PlayStation's website. Name the download "PS3UPDAT.PUP" and insert it into the "UPDATE" folder. This must also be done in all uppercase letters for the PS3 to recognize it.
Insert the USB drive into one of the PS3's USB ports. Press "X" on the PS3 controller to select "Settings." Click "X" on "System Update."
Click "X" on "Update via Storage Media." Click "X" on "OK" to start the update.