According to the manual you:
“Turn off the Super6, wait a few seconds and turn it on again.The instrument reboots and you will see progress LEDs, followed by
a combination of briefly lit lettered select buttons. Each time you turn on the Super 6, this combination of lit buttons will indicate the currently installed firmware version.”
But what does the buttons actually indicate? When I do the above procedure the A,C,E,F buttons light up(I think, I’m not in front of the super 6 at the moment). I have, however, no idea how to interpret what those buttons mean.