Red light on boot and Can't detect via putty serial. But, OPi3 works ok on ubuntu 16.8(green light).
Board: Not on the list
done a few more ( approx 6 ) till now and all looking good,
will start with cold boot early morning to see how things go and give a few more reboots after that.
but seems to be fine on this H6 board, over to topic : OrangePi3
Meanswhile executed reboots and cold starts, OPiOnePlus came back OK all the time ( kernel 5.9.16 )