Unverified firmware is one of the leading causes of "bricked" DVRs (devices that become as useful as a paperweight), camera feed loss, and security vulnerabilities.
Navigate to System Information. The new firmware version should match the file you downloaded (e.g., V3.5.42 build 210111 ). firmware hikvision ds7104hghif1 verified
Based on release notes archived for this series: Unverified firmware is one of the leading causes
: Access the DVR Firmware section
: A critical intermediate update required before moving to newer V4.x versions. Where to Download (Official Portals) camera feed loss
Avoid third-party "driver" websites. Use only official Hikvision repositories to ensure the file is digitally signed and malware-free. 🌐 Official Portals