... Open Sequence:First enter the working part of 2-in-1 decoder and pick tool into the button of lock ... cylinder,then unfold the driven Lever of 2-in-1 decoder and pick tool, Meanwhile use appropriate strength hold ... and then pick the side "B" No 2, 4,6, 8 Wafer untill the lock be openedDecoder sequence:First read ... and then read the side"B" No 2,4,6,8 wafer untill the lock can been openedAfter finish ...