Type 3-How to upgrade DVR's system?

Applies to:

DN81Q/DN41Q

Please check system current firmware build date. After upgrading, you can check if build date changed.

Steps:

1. Download the new firmware file to your computer.

2. copy the file to your USB hard drive.

3. Insert USB hard drive to USB port of DVR.

4. Go to Main Menu→ADVANCED→Upgrade.

5. The system will reboot after the upgrade.