I got it quickly fixed with the help of a support team. Thanks!

Hi,

I tried to upgrade my system (9527 and H3MB17), 8-410 and perhaps due to downloading incorrect file somehow or clicking incorrect link, the NVA identifies now as 4-camera system. All the port lights are now out and LAN will light up but will not configure (DHCP will be incorrect and static IP is not reachable)

Unable to revert back or change the firmware to anything else, it gives out "failed to load file" from update via USB although it sees the file. So effectively you can brick your device extremely easily with firmware files. I am waiting for instructions from support.