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DHI-NVR4108HS-8P-4KS2/L firmware upgrade
I have a DHI-NVR4108HS-8P-4KS2/L running firmware V4.002.0000000.3.R, Build Date: 22/03/2022 Is there a newer update? I wanted to upgrade as I dont have a menu option to Upload Custom Siren Audio Dont have an option Alarm->Alarm-out-port