Try removing the Orange Pi board and re-seating it (im sure you have already tried this)
You might also verify that both power supplies are fully seated, I had to push mine really hard to get them all the way in and locked.
while you are in the case, go ahead and verify all the connections inside, ie cards fully seated, fan control board connections, etc.
I will PM you with a Google Drive link for the 1.2.0 firmware