This is the version info maybe someone can tell from this if it's genuine or not.. and also if they is a newer firmware and how to get the firmware,
Device TypeDH-SD42212T-HN
System Version 2.623.0000000.7.R.R4.1217.3S.NR, Build Date: 2018-11-24
WEB Version 3.2.1.662493
ONVIF...