Can't get photos onto Panasonic BDP-320

[ericopusavc]

Hi all, got the 320 tonight. Love it, and the remote too even. However, it's not recognizing my iPhone4 in the USB port. I'm trying to transfer a photo on my iPhone4 onto the 320 so I can select the photo as my user icon. I go to Photos>USB from the 'Home' menu, but when I select 'USB' I get "No USB device inserted". Any thoughts to this?

Update: OK now it's getting bothersome about the photos not getting onto the 320 for the icon and the wallpaper features. As an attempted workaround I put 4 different .JPGs onto a USB thumbdrive, when I click to view them in the menu, I get "Cannot display on this unit". Help me!