: If your router was provided by an internet service provider (ISP), it likely uses customized firmware. In such cases, official retail firmware updates may not be compatible, and you should contact your ISP for updates. How to Update Firmware You can update your router using two primary methods. Always use a wired (Ethernet) connection during the upgrade to prevent data loss or device damage. Method 1: Web Management Interface : Open a browser and go to
Click the icon and select to download and install automatically. Method 3: TP-Link Tether App Download for TL-WR850N | TP-Link India Tp-link Tl-wr850n V3 Firmware Download India