- Download the correct LibreCMC image from https://librecmc.org/downloads.html (librecmc-ar71xx-generic-wndr3700-squashfs-factory.img).
- Turn on router and plug in an ethernet cable in LAN1.
- Put the router in recovery mode by starting the router, then holding the reset button for approximately 30 secs, until the power LED was blinking green.
- Plug the other end of the ethernet cable into your computer and configure your network to have static IP 192.168.1.2, netmask 255.255.255.0.
$ tftp 192.168.1.1
> binary
> rexmt 1
> put librecmc-ar71xx-generic-wndr3700-squashfs-factory.img