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….
Here is the link to d/l source code for this router.
http://www.linksysbycisco.com/US/en/supportgplcode?gplsku=#WRT54GL
Cisco will make you register, even for a guest account, in order to login and d/l GPL code.
Another link is
http://www.linksysbycisco.com/gpl