It is like the Genos:
Start when the SX is OFF and a USB is in the port.
Push [BREAK]+[ENDING2]+[ENDING3] at the same time.
Now turn on the SX and hold those 3 buttons pushed in till you see the Yam.Logo.
Each time you push the button [OTS4] it makes a screenprint.
You can find those screenprints In the root of your USB. They have the format: [Captxxxxx.bmp]