Your Hardware ID does not match the firmware. Double-check your board version in the "Version" or "Info" menu.
: Updating may occasionally break specific features like email notifications or mobile app thumbnails, which may require clearing the app cache or re-enabling settings via the web interface . Community Perspectives Preamble text v402r11 h264 h265 dvr nvr firmware download work
If you have searched for "v402r11 h264 h265 dvr nvr firmware download work," you likely fall into one of three categories: Your Hardware ID does not match the firmware