One of the things that I hate about the Firmware updates of the PlayStation 3 is the wait time to just download the file, so after the first two upgrades I learned to download the file directly from Internet to my PC and then install it using a USB device. The only downside is that it may take a few hour for them to update the download pages, but that’s ok for me.
First you should download the Update from one of the following sites. Note that until now all the updates have been the same for every PS3 around the world.
Download from Japan
Download from Europe
Download from United States
The next step is to create a folder in your USB device named PS3 and inside create another one named UPDATE. Now place the PS3UPDAT.PUP update file that you just downloaded in the folder UPDATE so it looks like this in your USB device: PS3/UPDATE/PS3UPDAT.PUP
Now all you have to do is connect your USB device to your PS3, go to Settings, select System Update and “Update via Storage Media”. Now the the PS3 will automatically copy the update to the Hard Drive and update the system from there.