Think of firmware as the operating system for your router. Regular updates from TP-Link Support provide:
Alternatively, log in to the web interface; the version is often listed at the bottom of the page. Step 2: Download the Firmware Download for TL-WR840N V6.20 - TP-Link tp link router firmware update tl-wr840n
: Fixes bugs that cause frequent disconnections or slow Wi-Fi speeds. Think of firmware as the operating system for your router