I seem to have bricked my unit :/
I did the following:
Downloaded LAG3355_upgrade_v1.bin from the link.
Pressed upload onto the controller (the miners were running while i did this).
I waited untill the "everything is okay" screen came up.
I went up and removed power from the controller, waited ~5 sec, and turned power on again.
Thought the same. Did you upload the second bin file after that?
Nope. Cant. the controller is totally unresponsive now. just one very quick flash, followed by a 1 sec blue light.