Downgrading can cause configuration corruption, camera incompatibility, or security vulnerabilities.

| Build Date | Version Example | Key Changes | |-----------------|--------------------------|-----------------------------------------------------------------------------| | 2023-08-15 | V4.002.0000000.0.R | HTML5 web interface default; fixed ONVIF Profile S/T compliance. | | 2023-02-10 | V4.001.0000000.2.R | Improved motion detection sensitivity; resolved PoE port 5 dropout issue. | | 2022-09-01 | V4.000.0000000.5.R | Added support for H.265+; fixed NTP time drift. | | 2022-03-12 | V3.216.0000000.3.R | Critical security patch for CVE-2021-33045. | | 2021-11-20 | V3.215.0000000.0.R | Initial S3/H hardware support. |

Firmware for the S3/H series typically focuses on enhancing the , improving PoE power management, and refining AI features like human/vehicle detection (SMD Plus). Model Compatibility: DHI-NVR1108HS-8P-S3/H

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