I used half a razor blade here

There is at least two steps missing between step 8 and step 9. Down at the charging port as well as on the other sides, boards and covers have to be removed. I managed, after all, but I had to unscrew 10 screws from the panel around the camera, and I had to bend the board that goes over the rubber cable (next to the port, as seen in step 6) a bit.