To download the file, you should primarily use official channels to ensure the security and compatibility of your surveillance system. Files from unofficial sources may contain malware or incorrect versions that could permanently damage (brick) your DVR. Download and Extraction
: Plug the USB into the DVR port. Navigate to Main Menu > Setting > System > Upgrade (or Info > Version > Start depending on your model series). Download File Firmware_DVR_4CH_CP-PLUS_4MB.rar
: Visit the CP Plus Firmware Support page to locate the correct firmware for your specific 4-channel model. To download the file, you should primarily use
: Select the file and click Start . The system will restart automatically once finished. Do NOT power off during this 5–10 minute process. Method 2: Web Interface To download the file