Nighthawk X6S EX8000 - Firmware interrupted, unit bricked

[Retired_Member]

Nighthawk X6S, AC3000 Tri-Band WiFi Extender, EX8000: Firmware update was interrupted.  Unit was bricked.  Red flashing power light, all white LEDs flashing.  Did a factory reset: constant hold, 30 seconds w/ power on / 30 seconds turning power off / 30 seconds power on.  Now, red flashing power light, no LEDs.  I do not have a Windows device.  Any suggestions?

[plemans]

You can try recovering it with tftp or nmrpflash.
You might want to try borrowing a windows device. Otherwise you can search the forum for mac os guides. 

https://kb.netgear.com/000059634/How-to-upload-firmware-to-a-NETGEAR-router-using-Windows-TFTP
just make sure you enable tftp
https://www.thewindowsclub.com/enable-tftp-windows-10

and here's a video walk through using a tftp client. Use the built in one for windows 10 though. the video is more of an example of how its done.
https://www.youtube.com/watch?v=R9DLrLQrpaw

and if that doesn't work, you can try using nmrpflash
https://github.com/jclehner/nmrpflash