The official firmware for the Hikvision DS-7616NI-K2 NVR is available through regional download portals. Due to major architectural changes between software versions, Hikvision recommends updating in sequential steps rather than skipping directly to the latest version Official Download Portals European Portal (Direct Download)
Hikvision uses a strict regional locking system. ds7616nik2 firmware link
There is no public link. But there is a path. The official firmware for the Hikvision DS-7616NI-K2 NVR
For the uninitiated, the DS7616NIK2 isn't a new iPhone. It isn’t a gaming console. It’s a ghost. It’s a 16-channel, 4K PoE NVR (Network Video Recorder) from Hikvision’s deep catalog—specifically, the kind that usually ends up in a casino vault, a government warehouse, or a paranoid prepper’s bunker. It’s the kind of device that, when it works, you forget about it. But when it bricks? You enter a special circle of digital hell. Permanent bricking (no recovery via USB or web)