supports , which can unlock advanced networking features. Download for TL-MR3420 V5 - TP-Link
: Right-click the downloaded .zip file and extract the .bin firmware file. tp-link mr3420 v5 firmware
: Visit the Official TP-Link Support Page and download the firmware matching your region (e.g., EU or US) and hardware version ( V5 ). supports , which can unlock advanced networking features
: Improved WPS security and fixed a specific issue where certain Huawei E3372h modems were not recognized after a reboot. TL-MR3420(EU)_V5_210820 (Published: 2021-08-26) Focus : Enhanced overall system stability . How to Update Your Firmware You can update your router using three primary methods: Method 1: Local Manual Upgrade (Recommended) : Improved WPS security and fixed a specific
Tap and select Update if a new version is detected. Third-Party Firmware: OpenWrt For power users, the TL-MR3420 V5
As of May 2026, the most recent official firmware versions for the TL-MR3420 V5 TL-MR3420(EU)_V5_211220 (Published: 2022-01-11)
If your router supports Cloud features, you can go to and click Check for Upgrades to install updates directly from TP-Link servers. Method 3: TP-Link Tether App Connect your phone to the router's Wi-Fi. Open the Tether App .