Here is the link,http://www.overlordcomputer.com/Overlord_Computer_Overclock_PCB_Set_p/ovrld_pcb.htm he's pretty sure that the PCB will work. I live in CA and they have no stock, I was going to order online in the morning.
Both his monitor and the MC are identical except for the inputs.
The only thing that bothers me about that is the price. Your monitor price plus another $200. They have one on their site, the Overlord Tempest X270OC - Grade A for Our Price: $529.99. You are going to be a good a mount over that from the original monitor price plus the pcb board.
Then there is no guarantee that your monitor will be a good overclocker. Unlike the one they are selling. Where it seems to be a 50/50 chance.
As soon as I hear back from them. I'll update the thread with the information.You could send the monitor to them and let them flash it. But that will take a little while. Hopefully they will release a public firmware update. This would be the best interest for them as well as the end users that have the older firmware.