Downloading the ps3 update directly from internet to the ps3 through my wifi is really a pain as it is so slow, so I decided to update it via storage device, here is how you can easily update it from USB Storage Device
Downloading and Copying the PS3 Update On USB Drive
1. Go to this Playstation website and download the latest ps3 update
2. Now Connect the USB Storage Device to your computer and quick format the USB Drive
3. After formatting the drive open the drive and create a folder called PS3 ( the name of the folder should be in caps )
4. Create another folder inside PS3 folder named UPDATE ( the name of the folder should be in caps again )
5. Copy the downloaded file named PS3UPDAT.PUP in UPDATE folder on your USB Storage Device
6. That’s now connect your drive to your ps3
Updating PS3 Firmware With USB Drive
1. Turn on the PS3 and connect your USB Drive which have the PS3 update in it
2. In the XrossMediaBar, head over to Settings and then to System Update, Press X on your controller to move to the next step.
3. Now select to update via storage media.
Follow the screen instructions after then to complete the update, this is the method to update your ps3 quickly is you have a slow broadband internet connection, this technique can also be referred as offline update for ps3.