Cool the odd thing is the firmware on it is the same as the firmware currently on bitmain. It only has balanced for freq options.  The batch 1 fw runs fine with only 1 board reporting temp. I ran your z9 2.0d and stock z9 firmware on this mini it runs fine but same thing no temps on any board but it clocks up to 737 stable your fw also unlocked the 4th port on the controller so I could run an extra hashboard where the stock mini only allows 3.