A few days ago, It got an email from the PSN about an Uncharted dynamic theme. Well I texted it in, and got a code. Well I thought that I would share it with you to see if this works for other people. Check out the picture below to see the instructions. This came directly from the email.
And also, this is a US email, so I'm not sure if this will work on anything but US accounts. You are surely welcome to try, though.
If this does not work at all, ah well.