I spoke with the Service Manager at DJI this afternoon for a good while. He says that regardless of what you see printed in the ESC label or anywhere else, if the cylinder on the ESC's have a Yellow Mark they are updated v2.1 ESC's and your quad will be good to go. So I have now got this issue defined to the point that we need to see a Yellow Mark on the cylinder appearing thing. This should help clear the minds of an even larger group of V3 owners now. Hope this info helps.