Use a USB 2.0 or 3.0 flash drive under 32GB. Format it to the FAT32 file system.
Example output:
Another reliable source for localized firmware versions. How to Identify Your Current Version firmware hikvision ds7104hghif1 verified
Copy the digicap.dav file to the root directory of a FAT32-formatted USB flash drive. Insert: Insert the USB drive into the DVR's USB port. Use a USB 2
This is the most reliable method, especially if the device is not connected to the internet. firmware hikvision ds7104hghif1 verified