Please follow the steps below to update DVR firmware:

1. Download the file "TVI-DVR-Firmware_V3.4.4U_20150627.rar" for TVD-04/TVD-08/TVD-16/TVD-16-1U

2. Copy the file into a USB memory drive, and make sure it is on the root directory of the drive and that it is FAT32 format.

3. Connect the USB memory drive into the front of the DVR.

4. Selected Main Menu --> Upgrade --> and then Select the firmware file;
    once highlighted, Click "Upgrade" on the upgrade screen.

5. Please donít turn off the unit while it is upgrading, system will reboot after the upgrade is done.

* Please contact your Sales Rep for login information.