22UpgradeThis option allows you to upgrade your DVR firmware. Put the firmware file on a FAT format blank USBflash drive (do not place the file in any folders). Insert the drive into the DVR’s USB port. Select this option(Upgrade) and it should detect your drive and the file. In the event that it is not detected, close the windowand try again. Once the file is located, click the Upgrade button to start upgrading.WARNING: Do not disrupt this process and ensure the DVR has a continued power supply. When it finishesthe system will reboot. The process may take as long as an hour in some cases. Disrupting this process willrender this machine permanently inoperable. Please seek professional advice prior to upgrading.Auto MaintainThis option allows you to periodically reboot your DVR and to delete old files. Rebooting will extend the DVRand its mechanical hard drive’s life span. Default is set to reboot every week on Wednesday 3 am.