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D-Link DNR-2020-04P User Manual
Section 3 - Configuration
Firmware Upgrade
The device firmware and device pack can be upgraded from this page. To
update the firmware, you must save the updated firmware file to a USB drive,
then connect it to the NVR’s USB port. Click Browse to search the USB drive
for the firmware update file. Click Load to upgrade. The new version number
will be displayed. Firmware updates are available on the D-Link Support page
at http://www.dlink.com/support
Note:
You may need to reformat your USB drive to NTFS format in order for the
DNR-2020-04P to recognize it.