Version of hardware and firmware in Scanmatik2 has to be 2.21.22  not other.
MUST NOT upgrade program NOR firmware of the interface otherwise it will lock itself forever.
Connecting interface to a laptop with newer version of Scanmatik application 
  will attempt to upgrade the interface  and also LOCK IT DOWN.
MUST NOT connect Scanmatik 2 Pro  (Chinese clone) to a different version laptop.
Original Scanmatik 2 Pro interface is allowed to upgrade.