1.K3M200 is for main control board, K3M100/101 is for master lane control borad and salve lane control board;

2.Main control borad, master/slave lane control borad need in same firmware version.

3.After adding device to 4200, you can choose to upgrade all of this three control borads in remote configuration>>system maintenance.

4.It may take a little longer time for master/slave lane control borad upgrading than main control board.