I want to force all of our 8841 and 8851 phone to have the same wallpaper/backgound. I have created the thumbnail image and full size and uploaded them as well as the list.xml. I can go to any phone and select Settings - Wallpaper and see it as an option.
I modified the Common Phone Profile that these phones use by disabling Enable End User Access to Phone Background Image Setting, checked Override Common Settings for Background Image and set that field to Desktops/800x480x24/FileName.png. I save then apply config and the phones no longer have the wallpaper option in settings but the background image does not change. I have rebooted and reset a test phone with no change.
I followed this Cisco document
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