Hi, today I am going to give you a step by step guide to upgrade your TP-link TL-WR841N router in an Open WRT enabled device.

Pre-requisite: Install SSH on your PC.

1. First, download the correct version of the image from https://wiki.openwrt.org/toh/tp-link/tl-wr841nd.  My router has the hardware version of WR841N v11. Therefore, I downloaded the following.  Select the factory.bin instead of the image
2. Next, connect your router to the computer with an ethernet cable. Access the web server at 192.168.0.1. Then goto the system tools -> firmware upgrade –> upload the dowloaded image –> select upgrade. The router will reboot automatically after the upgrade happens.
3. Once rebooted you can connect the router to the PC via ethernet cable. Open terminal  and type following command.

ssh root@192.168.1.1

if you get the above failure message then use the following command.

 ssh-keygen -R 192.168.1.1

Again the same command as first

ssh root@192.168.1.1

Thanks !!! 🙂