Brush firmware "BPV4_BOOT4.10_FW7.0_OPT0_18092016. hex" through PCIKIT3 programmer, then connect to PC through USB, cannot recognize COM port, only PWD light on hardware.
After brushing into the bootloader of package_latest_18092016, the BPV4 I made could not recognize the device through USB connection to PC, nor could it obtain the COM port.