If the web has a more recent firmware version than your recorder’s build date, then please update your device to the latest firmware.
Updating Firmware
1. Copy the upgrade software into the USB storage device.
2. Insert the USB storage device into the USB interface of the NVR.
3. Click Start→Settings→System→Maintenance→Upgrade to go to “Upgrade” interface. Select the USB device in “Device Name” option and go to the path where the upgrade software exists. Select the upgrade software and then click “Upgrade”. The system may automatically restart during upgrading. Please wait for a while and do not power off the NVR during upgrading.
After firmware is updated, the unit will restart. You can now remove the USB disk from the unit.