Installs elementary. You go into the factory firmware and download Lede, through the standard firmware update interface.
After the update, you connect via ssh - root login without a password. Through cli you change network parameters to those that are needed. You connect the router to your network and also through ssh you roll Luci, if necessary.
p.s. device version 1.
Post has been editedctrange - 20.11.17, 10:15