You need a single small wire. e.g. Speaker-cable.

Cut as single wire to 1 cm lenght. Form it to a U.

Put it into the two correct wholes in the socket.

Be carefull and count the Lines two or three times.

Line 35 from top (lever) 11 wholes from the right!
Line 36 from the top (lever) 10 wholes from the right!

These are the wholes, which has to be conected whith the wire.

Be careful when you reenter the CPU. Donīt press to strong.

So you put BF2 pin of the CPU to ground.

Now the CPU will recognize  3*100 as 5*100