Go to the official Hikvision Global website ( ://hikvision.com ) -> Support -> Download Center -> Firmware .
Before starting any firmware update, please be aware of the following:
Note: The exact file name usually arrives as a zipped archive containing a file named digicap.dav . This .dav file is the actual firmware binary. Step-by-Step Guide to Updating the Firmware
If you are in North America, use the "Technical Support" section on the Hikvision USA website to find the specific US-release firmware.
(which happens for regional mirrors), use the European Union portal: https://www.hikvisioneurope.com/eu/portal/ . Navigate to Portal > Product Firmware > Recorder > DS-7600NI-I2(B) / DS-7700NI-I4 . The DS-7616NIK2 shares firmware with the DS-7616NI-I2 platform.
Look at the sticker on the bottom of the NVR. If it says "DS-7616NIK2", it is likely Global. If it says "DS-7616NIK2**-C**", treat it as Chinese hardware.
If you are unsure of your device's region or exact hardware revision, Hikvision recommends these methods:
Under the "Remote Upgrade" section, click and select the local digicap.dav file on your PC.
Go to > System > Maintenance > Upgrade & Maintenance .
Experts recommend a stepped update path to avoid system glitches: build 180904 build 200628 EUI build 211009 build 240108 (Recent Stable)