Is your PlayStation 3 having trouble connecting to the internet? This article will show you how to update the firmware manually. You can download and transfer the update file (PS3UPDAT.PUP) using a compatible storage device such as Memory Stick, Memory Stick Duo, a USB key (FAT32) or PSP.
How to install a PS3 update via a USB key
A USB key formatted in FAT32.
Create a PS3 folder at the root of your USB key.
Open the PS3 folder and create a UPDATE subfolder.