I did a google search for my device's firmware and I found a link on another Hikvision website for a version that is newer than the one found on the US or Canada site. Can I upgrade to it?
No it is strongly advised against doing that. If you've found firmware newer than what is on the North American websites it is likely meant for devices from a different region. All Hikvision devices are region-specific so installing firmware from another region will at best fail and at worst harm your device. Please only upgrade North American devices with firmware obtained from either the North American websites or from the North American support team.