Originally Posted by COBRARACING

Plug the multi lcd box to the pc and upgrade the software to the new version once you open the v3.3 usb link it will give you the option on drop menu which software you can use.Also make sure you have plugged in the lcd box to the programming port also listed as external fan 3 pin on your v3.1 escs etc as the justock uses the rx port to program the v3 uses the 3 pin fan prg port to program.