: The compilation date of the firmware, formatted as YYMMDD. This software was compiled on April 7, 2021 .
This build fixes a bug from 2020 builds where MAC binding would reset after a power outage. In Rel.7370n , the ARP table persistence is stable.
By 2021, several vulnerabilities related to WPA2 encryption and DNS rebinding had been identified. This firmware version includes patches that harden the router against these common exploits. Technical Specifications Specification 300 Mbps (2.4GHz) Antennas 2 Fixed 5dBi Omni-Directional Ports 1× WAN, 4× LAN (10/100Mbps) Management Agile Config, TR-069, Web UI How to Update or Reinstall
The firmware version 3.16.0 0.9.1 v6031.0 Build 210407 Rel.7370n represents the software state of the TP-Link TL-WR850N as of early 2021. While the router itself is a reliable entry-level device for basic networking, security vulnerabilities like CVE-2026-4346 render outdated firmware a significant risk. Users of this specific version should take immediate steps to update their device to ensure the safety of their home or office network.
3.16.0 0.9.1 v6031.0 Build 210407 Rel.7370n │ │ │ │ │ │ │ │ │ └── Release Code (7370n) │ │ │ └───────────── Compilation Date (April 7, 2021) │ │ └─────────────────────── Core Software Version │ └─────────────────────────────── Sub-module / UI Engine Driver └────────────────────────────────────── Major Code Base Reference
This document outlines the technical specifications for the TL-WR850N device as of firmware version 3.16.0, sub-version 0.9.1. The device's build version is v6031.0, constructed on April 7, 2021, and it falls under release version 7370n.
: The minor modification or subsystem version control number.
Upgrading your TL-WR850N router to firmware version 3.16.0 0.9.1 v6031.0 Build 210407 Rel.7370n offers numerous benefits, including:
Visit the official TP-Link India Support Page for the correct firmware file.
If your router is currently on an older version and you want to move to Build 210407, follow these steps:
Most users can follow the wizard, but manual entry is available under the Basic or Advanced tabs: 3.16.0 0.9.1 v6031.0 Build 210407 Rel.7370n (TL-WR850N)
: The internal version control number for the TL-WR850N chipset.
Allows ISPs to set custom default configurations that remain even if a user performs a factory reset.
