I also own the original R2 board and the best doc I have found so far is actuall...

I also own the original R2 board and the best doc I have found so far is actually not the official wiki, but the one created by Frank W: https://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:start

I was hoping that I can built my own router with it, but so far it is still a learning process. Although, it is still fun.