Tried all suggestions in the thread, after the factory reboot and FW install it will broadcast a signal, however, it will drop every few seconds both wireless and wired. I think it truly is dead. Didn't even notice we were attached to the damn thing till now (still looks brand new).
Any recommendations on another quality router like the Dir-655 for another 7 year (maybe more) run?
Many thanks for your help guys, much appreciated.