Super Router Firmware
Here is the list of WRT54GL Super Firmware. Also some screenshoot of them.
With that all firmware you will have rich feature than original firmware can give. Just try it and explore for some excitement that WRT54GL can give. It will make your WRT54GL CAN DO MORE.
There is a chance you can brick your router if something goes wrong, also that will avoid your guarantee hardware.
So do this at your own risk ! It’s only for WRT54GL v1.0 and v1.1 hardware. Read carefully for instruction. If you follow instructions correctly everything will go smoothly.
Remember to hard-reset the router before attempting anything as it will help minimize the chances of anything going wrong.
You can kill it but you can revive it, just takes read how to WRT54GL is Immortal page.