Released note for version 4 (CP-UVR-1601E1-HC, CP-UVR-1601E2-H, CP-UVR-1601E1-H,CP-UVR-0801F1-HC, CP-UVR-0801K1-H, CP-UVR-0801K1B-H, CP-UVR-0808K1-H,CP-UVR-0401L1-4KH & CP-UVR-0401L1B-4KH) 1. New Wi-Fi Modules and 3G/4G dongles are supported. 2. Third-party HDCVI camera OSD menu can be opened via DVR PTZ option. 3. Improved the stability and performance of the device. 4. No plugin is required to view DVR on Firefox, Opera, Chrome, and Safari. 5. Introduced 8 Indian Languages as DVR GUI language. 6. Fixed Known Vulnerabilities. 7. Fix issues related to GUI.