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- Uninterruptible Power Supply (UPS) connected
- No thunderstorms in the area
- Backup of current configuration (export .db or .conf file)
- Stop motion recording or set cameras to standby (optional but recommended)
- Backup Configuration: Export device settings (network, users, schedules, motion zones) to a USB drive or network share.
- Check Recording Status: Ensure no critical forensic recording is ongoing for the next 15 minutes. Hot updates may cause a 2–5 second frame loss on some channels.
- Network Stability: Use a wired Ethernet connection between your PC and the recorder. Disable Wi-Fi on your admin laptop.
- Power Backup: Connect the DVR/NVR to a UPS (uninterruptible power supply). A power dip during flash write will brick the unit.
cat /proc/version # Should show new kernel date get_hw_info –codec # Should return both h264 and h265 support
| Feature | H.264 (AVC) | H.265 (HEVC) | |---------|-------------|---------------| | Bandwidth | High | ~50% lower than H.264 | | Storage | Requires more HDD space | Saves up to 40% storage | | Compatibility | Universal (all old cameras) | Requires newer IP cameras | | Processing power | Low | High (needs modern chipset) | v403r11 h264 h265 dvr nvr firmware download hot work