Hi, I updated a firmware today on 20 pieces of RB493G, after the update I went to reboot, which needs to be done by procedure. After that none of the Routerboards did't work, all LED are constantly lighted, can't access the router over serial... Does anyone know what the problem is? Is it possible that Mikrotik has tsuch a large bug?? 20 RouterBoard 493g, this is not small money!! What should I do??