Instructions
Log into your router from your browser window. This is typically found at "192.168.1.1." Enter your log-in user name and password to log into the router.
Click on the "Proxy" setting and check the IP address of the proxy. Proxy servers can go out of service; these steps will ensure yours is in service.
Go to the proxy server's web address to make sure that it is working properly. If the proxy server page does not load, choose a different proxy and enter the IP into the router's proxy address.
Click the "Save" button to save your settings. Turn on your PS3.
Go to the "Settings" icon on the PS3 home screen.
Click on the "Network Settings" button and then click on the "Internet Connection Test" icon.
Wait for the test to complete. Once the test tells you that you can connect to the Internet, exit out of the window.
Go to the "PlayStation Network" icon on the home screen and click on it.
Wait for the PS3 to sign you into the network.
Select your game from the menu and wait for the game to install to your PS3.