For the test, I will update the firmware on the HikVision DS-7716NI-ST with firmware 3.1.1.
First of all we download the newest firmware from the official site
I downloaded the version 3.4.4 (170526) multilingual.
We will proceed with the update. Let’s go to the web interface of the DVR by typing its IP address in the address bar, I opened it via Internet Explorer, because Mozilla Firefox did not let me specify the firmware file.
Enter username and password (standard admin/12345)
Open the “Settings” tab, then “Service”.
Where the line “remote software update” is clicked “Browse” and specify the firmware file (unpacked from the previously downloaded archive), in my case was “digicap.mav”, click the “Update” button and wait for the process to finish about 5 minutes.
During firmware, you can not turn off the power of the device, otherwise it can be damaged.
This completes the firmware update procedure.