Firmware Update
Important:
Please download the firmware matching for your camera model number. You can find the camera's model number from the label or the system information page. If you use wrong firmware file, the upgrade will fail.
To learn more about firmware upgrading, please refer to How to upgrade firmware to camera.

NC-128SPW 50HZ:
https://www.dropbox.com/s/w7vjzil7orz7aqm/FIRMWARE_EN_OEM_NC128SPW_50HZ_FACTORY_V6.73B20181206.mfw?dl=0