Linksys released the WRT54GL (the best-selling router of all time) in 2005 to support third-party firmware based on Linux, after the original WRT54G line was switched from Linux to VxWorks, starting with version 5. The WRT54GL is technically a reissue of the version 4 WRT54G.

WRT54GL Firmware Reviews | HubPages Sep 21, 2014 Flash your WRT54G or WRT54GS v5 series (v5, v5.1, v6) - DD No reversion back to VxWorks is available. I never got around to creating the GS reversion firmware. It could EASILY be created by someone using the tools I've written and the documentation here. A person once sent me a GS router hoping I might, but I didn't get to it and now no longer have that router. Doing this in your WRT54G will BRICK How to Choose the Best WRT54G Router for You

Use the Firmware upgrade option under the Administration tab to flash vxworkskillerGSv7-v3.bin. After the dialogue about disconnecting the power cord is shown, disconnect the power cord and reconnect it. Wait for FIVE FULL minutes, then disconnect the power cord for 10sec and reconnect it. Transfer the firmware using TFTP

How to Choose the Best Firmware to Supercharge Your Wi-Fi OpenWRT is the firmware from which many others were born. It’s completely open source and customizable, based on the Linux kernel, supports package management and has tons of … Need firmware update for Linksys WRT54G - Cisco Community Nov 23, 2011

WRT54G Wireless-G BroadBand Router Firmware - Free

DD-WRT and Tomato: Which Is the Best Router Firmware? Jun 20, 2016