Alternatively, you can also try the following methods:
Based on available information, your DVR might be compatible with or currently running firmware version V2.2.15 or later. When you find the official download page, look for the latest available version.
Log in to your DVR via its IP address in Internet Explorer (or Chrome with IE Tab). Go to .
firmware file, you can install it using one of two primary methods: Hikvision DS-7104HWI-SH 4 channel economic WD1 DVR
Patches critical backdoors, credential vulnerabilities, and encryption flaws.
: For a more automated approach, Hikvision’s HiTools software can identify your device via serial number and fetch the latest compatible firmware automatically. Best Practices for Installation
This is a good alternative if you don't have network access.