We still don't know, from where the photo of little W came, which probably showed him in front of a monitor. Did we think at the time, he had cried before being videoed - my memory fails a little bit. I remember, that in the background behind little W we saw a picture (embroidered/knotted/painted??, resemblance to a coat of arms) hanging on the white wall, and to the right was a room door seen.
This photo of little W wasn't urgently necessary to find the boy, because there were other pics of him. But LE must have thought of it being very useful for the search and had the photo on their "investigation board" (don't know the designation).
If I remember well, some of us here on WS assumed, the photo possibly may have been found on the dark net.
When I just searched for the photo with Google, I couldn't find it. It seems to have disappeared - like little W.