hello to all, I have a tp link wr740n and I want to fix it, it happened to brick it, my opinion I think the bootloader is corrupted, when I connect it does not turn on all the leds, only the power and the last two lock and internet I mentioned that the last two LED lights are very weak, I plugged a usb-ttl ch340g at the serial port and did not go in putty does not appear anything, how can I repair it?

Please tell me if it can be repaired with a BIOS ch341a (SOIC8)

the last time it worked, I was talking to someone on the messenger, and the router restarted and so I stayed waiting for an answer as soon as possible!

Yes you can rewrite the bootloader with a CH341 based programmer.  If that is the problem.  Did it brick because you tried to flash something?

yes, I tried to upgrade the firmware to the experimental openwrt version
Instead the router worked for about 3 days after that upgrade, it happened to reboot and it was stuck, the POWER LED is the only one that lights up properly when I power the router, the power LED is lit normally and the last two WANs and WPS (the one inscribed locked, I guess ) are on but very bright!

I put it in the socket and that's it!

Please if you can tell me where I can find the original tl-wr740n v5 bootloader I searched the internet and found this site pulpstone.pw where I can install a bootloader much better than the stock!

the last thing would be to confirm if I still need something, if I write the bootloader automatically with that programmer, the router will start normally? I read on a forum that she needs the art too!

(Last edited by laurentiu340 on 15 Feb 2018, 16:55)