My Firmware is 3.17.01 Rev:93 and sending the picture of my configurator. Excuse me i wrote on answer side.
Make sure FMB120 has been connected to the power supply. and both green led's are on (or blinking) .Connect FMB120 to PC via usb cable and folow next steps from the the link https://wiki.teltonika.lt/view/How_to_connect_OBD_II_Blue-tooth_Dongle_to_FMB_device
Hope that helps
My Firmware is 3.17.01 Rev:93 and sending the picture of my configurator.