Instructions
Insert a USB flash drive into your computer's USB port.
Search for "carbon fiber background" using your preferred Internet search engine. Right-click the image and choose "Save Image." Save the background image to the USB flash drive.
Remove the flash drive from the computer and insert it into the USB port of the PS3.
Scroll to the Photo section of the XMB. Scroll down until you locate the USB flash drive in the list of devices. Highlight the USB flash drive and press "Triangle." Highlight "Display All" and press "X."
Highlight the carbon fiber background image and press "Triangle." Highlight "Copy" and press "X." Press "Circle" twice to return to the main XMB menu.
Scroll to the Settings section of the XMB. Highlight "Theme Settings" and press "X." Highlight "Background" and press "X." Highlight "Wallpaper" and press "X." Press "Circle" twice to return to the main XMB menu.
Scroll to the Photo section of the XMB. Highlight the carbon fiber background image and press "X" to open the image viewer.
Press "Triangle" to open the image tools menu. Highlight "Set As Wallpaper" and press "X." Use the analog sticks to position the carbon fiber image and press "X" to save the background. Press "Circle" three times to return to the main XMB menu.