H.265 compresses data more efficiently, allowing you to keep weeks of footage on a hard drive that previously only held days.

In hybrid DVRs, a firmware upgrade sometimes resets the video signal standard. Navigate to your device settings and toggle between PAL and NTSC to restore matching camera sync rates. Post-Upgrade Security Checklist

If you're unable to find the firmware on the manufacturer's website or need assistance, you can:

: Log in to your DVR/NVR and navigate to [Main Menu] > [Info] > [Version] .

The v402r11 firmware offers several improvements and new features, including:

Upgrading your security video recorder is the most effective way to patch critical vulnerabilities, eliminate system bugs, and unlock advanced video compression features. If your security system runs on the firmware architecture, implementing the correct update ensures compatibility with modern H.264 and H.265 (HEVC) IP cameras and analog streams.

Many V402R11 boards utilize HiSilicon (Hi3536, Hi3520, etc.) or Novatek chipsets. Ensure the firmware matches the chip sub-architecture.

Supports various resolutions, including 1080N, 1080p, 4MP, and 5MP AHD/NVR systems.