Official firmware can be found through the following authorized channels:
Some users utilize sites like Softpedia for archived versions, such as V5.7.23 , which addresses critical security vulnerabilities like CVE-2025-45851. How to Update Your DS-2CD1021-I ds-2cd1021-i firmware download
Use the Hikvision Search Portal by typing your model number to find the latest "digicap.dav" file. Official firmware can be found through the following