This package contains latest source code of Tomato (Version 1.25) as well as a script to automatically download and compile the firmware.

After untarring it (tar -jxvf Tomato_1.25.tar.bz2) read the README file first. It contains one script which will download and compile the source code automatically, producing a TRX and CHK file which can be used to reflash your WGR614L.

I have tested it on Fedora Core 3, 6 and 9. I can not predict the outcome of running this script on other OS.