Instructions
Ensure that you are within range of a Wi-Fi network with Internet Access.
Configure the wireless connection settings on your PSP by navigating to Network Settings and searching for the available networks.
Complete the network setup by following the prompts and launching the Web browser to confirm you have an Internet connection.
Navigate to the System Settings on your PSP and update the PSP firmware to the latest version available.
Launch the browser and enter the Facebook URL address as shown below:
http://m.facebook.com
Enter your Facebook username and password to log in to your account.
Add a bookmark for the Facebook URL by pressing the triangle button on your console and selecting "Add to Bookmarks" from the list options.