Once you have downloaded the file, how do you verify it hasn't been tampered with?
The only verified source for Hikvision firmware is the official Hikvision website. While the web address may vary slightly depending on your region, the primary global portals are:
Verified Firmware Download Portal for Hikvision Devices
Instead of searching by name, it is often safer to browse by category (e.g., Network Camera > G5 Platform ).