When users get H0041 error after pluging the DolphinDVR USB hardware dongle, users need to upgrade the USB hardware dongle. Users can download the dongle upgrade software here: https://dolphindvr.com/dolphin-dvr-download-center/
Users just need to download the USB hardware dongle upgrade software, generate the activation file and email to support@dolphindatalab.com or give it to your sales representative, the error will be fixed soon.
Dolphin DVR H0041 Error Fix