Netgear R6400 v2 Firmware without WLAN

Good Day. I have two Netgear R6400 v2 and I want one of them with OpenWrt. I am ok with WLAN is not supported, I disabled WLAN on one of them anyway.

I would be very happy if I get OpenWrt firmware for Netgear R6400 v2 without WLAN support and Installation Method.

P.S. I have installed OpenWrt on D-Link DIR-878 and found this very organized and customizable. I configured Networks for LAN, IOT, Guest and VPN for Testing and It'll be ready for deployment If I can prepare R6400 v2 with OpenWrt.

Thanks in Advanced

search is a cool feature...

Thanks. I read that article before posting and that's why I asked for a version without WLAN feature.