I've put together all the 16 pieces into one high resolution picture (2400x2400). And that includes the missing 15th piece (white area).
Before burnitdown.linkinpark.com went down I downloaded the scrambled 15th puzzle picture and put together all the small pieces in the correct order. When that was done I still missed one piece, the black one. So I figured that the opposite side must be similar, and it was. I was now able to fix the missing piece.
You can see the high resolution 2400x2400 picture below.
