Applies to: NW41V/N441H/N441K/N28WEB/N441B/N441D/N441L/N44PAN/N44PAJ/N34WDB/N34WDD/N44WEB/N44WED/N44WEC/NW41V/N44WBD/N48WHP/N48WHE
1. Contact email@example.com to ask the new firmware file.
2. Copy the new firmware file to a USB drive (The USB drive should be FAT32 format)
3. Insert USB hard drive to NVR‘s USB port.
4. Go to setting to select the file and upgrade.