Switch the top dial on the left side to “ISO", the move the back dial on the right side until the viewfinder says “400”, “100” or whatever film speed you are using. Then, Flip the top dial on the left back over to your shooting mode (M,A,S, or P).

In theory, once this is done, the film should load when you turn it off and on again, but that doesn't work for me at the moment - although it did remove the “DX". The flashing “Err" is still present and the film won't load.

you might want to put a note for the delicacy of this cable on Step 16... because the cable can break as you slide the logic board assembly out :o(