This link:
http://www.hydrogenaudio.org/forums/lofiversion/index.php/t58720.html
got me started. Thanks to TrNSZ, whomever he is.
I managed to d/l GPL code for v1.1.03 from Linksys and built fw image that works, e.g. I u/l it to my wrvs last night, and rebooted into it. Everything work as before, routing, firewalling and wifi…. phew! 🙂
Next is to adding features/functionalities. More to follow.
I found link to the 1.1.13 src, compiled and have been running that for last week or so. So far so good….