R7900P no longer functioning after firmware update

[krissully]

Clitch while updating firmware. Two lights, one is orange flashing, always. No internet. Restarted modem. Restarted router. Multiple times same results. Unable to log on. Unable to connect. Tried tftp (Windows 7 32 bit) to restore with older firmware but got tftp/udc server unknown. Have checked ports/firewall. Have reset in every way listed from reset/off/on, to 10 sec to 30 sec. Sometimes I can ping, other times it times out. When I can ping I still cannot log on. What am I missing? 

[FURRYe38]

Please post about this in the Nighthawk router forum for your model router:
https://community.netgear.com/t5/Nighthawk-WiFi-Routers/bd-p/home-wifi-routers-nighthawk

Good Luck.