Recent releases of V4.02.R11 include patches for default-password vulnerabilities and Mirai-class Telnet threats.
The next five digits ( 31095 ) match the exact silicon board layout, processing chip (SoC), and video input matrix.
The safest source is the Xiongmaitech Support Portal (xiongmaitech.com). They offer a searchable database. If your system version matches the "Red" part of their numbers, the file is compatible.
Log into your DVR/NVR local interface using an admin account. V4.02.r11 H.264 H.265 Dvr Nvr Firmware Download
| | Likely Cause | Potential Solution | | :--- | :--- | :--- | | "Update Failed" Error | Firmware file is corrupted; the USB drive is not FAT32; version is incorrect. | Re-download the file and re-format the USB drive to FAT32. Double-check the version. | | Recorder Won't Boot | The power was interrupted during the update; or completely wrong firmware was installed. | Contact the manufacturer for recovery instructions. The device may be beyond repair. | | Cameras Show No Image | Settings were reset; or the firmware changed video encoding defaults. | Re-add your cameras manually. Check the video format (e.g., AHD, TVI, CVI) settings. | | Forgot Login Password | The update reset the password to default. | Check the sticker on the device for a default username and password (e.g., admin/blank). |
: The Hardware ID / Vendor Platform Code (The most critical part).
Before downloading, you must verify your device's specific found under [System Information] > [Version] . Using a version meant for a different hardware build—even if it is labeled V4.02.R11—may cause a MAC address conflict or total system failure. V4.02.R11 H.264 H.265 DVR NVR Firmware Download Recent releases of V4
Given these serious risks, isolating the recorder on a dedicated VLAN (Virtual Local Area Network) is highly recommended. Limit remote access and never expose the device directly to the internet without a secure firewall.
If you do not need AI (facial recognition, vehicle detection), . It is the most bulletproof version for standard security recording.
Closes critical backdoors, Telnet vulnerabilities, and default password exploits targeted by malicious botnets. Step-by-Step Firmware Download and Installation Guide Step 1: Extract Your Exact Hardware ID Power on your NVR or DVR. Right-click the screen to access the Main Menu . Navigate to System > Info > Version . They offer a searchable database
It ensures compatibility for both H.264 and the more efficient H.265 video standards.
V4.02.R11 represents the main system architecture and feature set designed by the manufacturer.
: Download directly from the Xiongmai Service Portal by looking up your hardware profile number.