Glad to see your answer, I have 2 queries.
First of all, no, I had not seen that instructable. As far as I can read, it belongs to the model that includes a D at the end "TL-WR841ND", I really don't know what the difference is between it and the one with the D.
Second, assuming they apply equally, I did the step of downloading the OEM version provided by TPLINK and the name contains 'boot'.
From what I understand I have to cut something but I can't fully understand, the commands suggested by 'DD' I think they are from linux? Or are they commands that can be entered into the router? I'm a bit lost in that regard.
I really appreciate you taking the time to respond and I would appreciate it even more if you could continue supporting me with this topic! All the best.
Hello! I understand what you're saying, in the first post I mentioned that I already tried doing it with a TFTP server. Now I tried again to take a screenshot and be able to attach what the log returns.
As you can see, it makes the connection perfectly, the router requests the file and it is sent correctly. But the router later works for a few seconds and returns to the "bricked" state.
In the image you can see that I downloaded the v13 file, and that it contains the word boot, so I don't know if I should cut something, since I don't quite understand the first thing that d687r02j8g attached.
The only thing I did to the downloaded file was change the name, but since it doesn't work I think it's not enough.
I leave a link of the LED pattern, in the "working" state and then back to the "bricked" state.
Thank you for your response, I'll be attentive in case you could continue supporting me with this problem.