Firmware level 2.x.y indicates that was WebControl board with BRE firmware
Firmware level 3.1.x indicates that is PLC firmware for WebControl 8 HW rev 2.0.2 board.
Firmware level 3.2.x indicates that is PLC firmware for WebControl 8 HW rev 2.2.2 board.
Firmware level 3.3.x indicates that is PLC firmware for WebControl 8 HW rev 2.3.x board.
Firmware level 4.x.y indicates that is PLC firmware for WebControl32 board.