If you want to enable your FDS with COPY function, then need to Hack BU3208 or BU3213.It is located under battery case PCB. After that you also need to Hack FD3206 Too.
But if you have FD7201 IC, then you can skip this Hack. More picture coming

FDS BU3208 / BU3213 Hack.

FDS FD3206 Hack.
Info can find on FDS-COPY