... button of lock cylinder,then unfold the driven Lever of 2-in-1 decoder and pick tool, Meanwhile use appropriate strength hold on ... you can open the light)First Pick Side "A" No.1.3.5.7 wafer, and then pick the side "B" No ... 2, 4,6, 8 Wafer untill the lock be openedDecoder sequence:First read the Side "A" No.1,3,5,7 ... wafer, and then read the side"B" No 2,4,6,8 wafer untill ...