Linksys WRT1900AC or WRT3200ACM (still support OpenWrt/DD-WRT with gigabit Wi-Fi).
The final official firmware for the WRT54GL (v1.1) is . While this version is dated compared to modern standards, it provides the most stable "out of the box" experience for users who only need basic 802.11g wireless functionality at up to 54 Mbps.
The Linksys WRT54GL is a legacy product. The official support page is often hard to navigate. Here are the direct details for the last official stable release:
The ability to flash these firmwares unlocks enterprise-level features not present in the stock firmware:
The most proper and important feature regarding is its full compatibility with open-source, third-party firmware (especially OpenWrt , DD-WRT , and Tomato ).