If you purchased the unit through a security integrator, they often have access to a private firmware repository for their clients. Pre-Update Checklist
Are you trying to fix a or just looking for the latest features? cpvra1e0804 firmware download link
Take photos of your network configurations and camera settings, as an update may reset the device to factory defaults. How to Install the Firmware If you purchased the unit through a security
Before you attempt to flash new firmware to your DVR, follow these safety steps to avoid "bricking" the device: cpvra1e0804 firmware download link
The system should detect the update file on the USB. Select it and click "Start" or "Upgrade."
Never update firmware during a storm or if your power is unstable. Use a UPS (Uninterruptible Power Supply) if possible.