3.16 FTDI Header (J8) for DFU WINCS02 supports Device Firmware Update (DFU) via FTDI header (J8) with FTDI cable. Figure 3-9. FTDI Header (J8) Pinout Diagram Note: For more details on serial DFU and Over-the-Air (OTA) programming guidance, refer to the WINCS02 Application Developer’s Guide.