Many thanks for reading and trying to help. I simply want to install openwrt on this router. Currently, version 18.xxx is supported on it. Here's proof: https://openwrt.org/toh/hwdata/d-link/d-link_dva-g3810bntl_a1
But I cannot, for the life of me, figure out how to upload openwrt to it. It does not have a web interface to 'upgrade firmware.' Yet I've read about folks who were able to put it in a mode that allows for that. Just how, it's never said.
While we're at it, may I ask; does anyone know how to completely reset these boxes. I'm able to work with one, as in get into the web interface, etc. The other won't give anything. No IP, nothing. But I can see on the LAN port, negotiation going on, because of the blinking lights. I've tried the obvious, hitting the reset button, but this has done thing.
Thanks a lot.