Yeah the new firmware prevents nicehash due to.the constant switching nicehash causes. I would not use nicehash with t17 t17e t17+ gear.
Or any type of.s17 gear.
Constant switching requires the use of #xnsub. Was this removed from newer gear?
I agree that nicehash isn't the best way of running a sha256 miner, and they have shady past record forcing loses to their clients when hacked, etc.