New firmware 992108_DH_NVR4XXX-4KS2_MultiLang_V4.000.0000001.4.R.191129:
https://dahuawiki.com/images/Firmware/992108_DH_NVR4XXX-4KS2_MultiLang_V4.000.0000001.4.R.191129.zip
in Firefox control panel:
New firmware 992108_DH_NVR4XXX-4KS2_MultiLang_V4.000.0000001.4.R.191129: https://dahuawiki.com/images/Firmware/992108_DH_NVR4XXX-4KS2_MultiLang_V4.000.0000001.4.R.191129.zip
firefox: