As of 2026, TP‑Link notes that TL‑WR840N is not sold in the US . If you see a “US” version, it likely refers to a Latin American or other region that uses the “US” code.

By following this guide, you will extend the life of your router, patch critical security flaws, and ensure stable Wi-Fi for your home or small office.

Before beginning, always use a rather than Wi-Fi. Upgrading over Wi-Fi risks a signal drop, which can corrupt the file transfer and permanently damage the router. Step 1: Download the Correct File Download for TL-WR840N V6.20 - TP-Link

Many users search for "full firmware" to distinguish it from incremental "patch" updates. A full firmware file typically contains the entire operating system of the router, including:

If the router behaves strangely after the update, perform a factory reset by holding the reset button for 10 seconds. If you are looking for specific versions, I can help you:

Before you even search for a file, understanding your router's exact hardware version is the most important step. Installing the wrong firmware can "brick" your device, rendering it as useful as a paperweight.

Understanding your underlying hardware is critical before attempting to rewrite its flash memory. Specification Wi-Fi 4 (IEEE 802.11n/b/g) Frequency Band Max Wi-Fi Link Speed Chipset MediaTek MT7628NN (or variant) Antennas 2 × Fixed 5 dBi Omni-Directional Antennas Physical Ports 1 × 10/100 Mbps WAN Port, 4 × 10/100 Mbps LAN Ports Power Rating 9V DC / 0.6A 💾 Step 1: Downloading the Official Full Firmware

is a popular, cost-effective wireless router designed to provide reliable internet connectivity. Specifically, the hardware version (often denoted with "ME" for Middle East or specific regional variants) benefits significantly from regular firmware updates.