To write the firmware onto the board, you need a hardware programmer and PC software.
Primarily via USB Upgrade through the receiver's menu. 1506hv software
In the automotive tuning world, "1506" often refers to the producing 150 or 160 horsepower (HV = High Voltage or High Volume variant) used in vehicles like the Dacia Duster or Renault Kadjar. To write the firmware onto the board, you
When it returned, it had changed. Now it read: 1506hv software
The 1506HV board is essentially useless without the correct firmware. The board itself is generic; the firmware tells the board specifically which LCD panel it is connected to.