Hi, my name is Rodrigo I sent a my s19 pro to repair site in hong kong, you sent a replacement product s/n NGSB67ABJJIJH0581, this product present problems :
hash board 2 : present error hashboard anormal hasrate and present chips with warning
hash board 2 : present hashrate 20% most low, of normal hasrate
present 26 th/s , a normal hash per hashboard is between 35 -37 th/s
the machine s19 do not allow up date firmware.
Please indicate how to proceed since the replacement machine has errors and should be good.