Instructions
Turn on the PS3.
Scroll down to "System Settings" on the main menu. Locate "Settings" and tap the "X" button.
Move the cursor to "Display Settings" and tap the "X" button.
Click on "Video Output Settings" and press the "X" button.
Verify the cable connection currently set up with your PS3 and tap the "X" button.
Scroll down to the "Custom" option setting and press the "X" button. Select 1080p and click in the check box by tapping the "X" button. Click on the "Save Changes" link and press the "X" button.