Hikvision is gradually moving I-series NVRs to and above. However, the DS7616NIK2's hardware limit often stops at V4.80. Before downloading any newer link, check the release notes for phrases like "EOL" (End of Life) or "Legacy support only."
On the Hikvision download page, search using the full model number, e.g.: ds7616nik2 firmware link
The Hikvision UK portal provides structured directories for K2, K4, and K8 series firmware. Hikvision is gradually moving I-series NVRs to and above
Then filter by “Firmware” and match your hardware version. search using the full model number
The Hikvision DS-7616NIK2 is a stalwart of the surveillance world. As a 16-channel, 4K-capable Network Video Recorder (NVR), it is designed to run 24/7. However, like any complex embedded system, its longevity and security depend entirely on keeping its firmware up to date.