@noseran 

I did a factory reset 2 times after checking the new firmware, it's something new for me, but it worked. Tell me better where is the OneMesh disable option? Have you used an extra switch between your computer and router?

@Kreco the OneMesh disable option is not available yet, what I am trying to do is flash the original firmware so when the next update is lauched (hopefully with the disable option) i can upgrade to it.

Regarding the extra switch between the computer and router, i never needed one, it always worked without it.

@noseran 

Where I read, they recommend the switch, if it does not work now, try it. I always went back to 1.2.1. I doubt they will make a mesh switch. I wrote a few months ago with a senior engineer and suggested this option. I don't know how to help you, that's the difference between our methods (switch).

@Kreco thanks man, i'll give it a try once no one at home is using it tonight... I hope they make it, as they said in the post: "(...) we already have the plan to add an Onemesh on/off switch (...)", "This will take some time, however, we hope you could wait patiently"..

@Kreco no luck.. same result as before. The bin file gets uploaded but the router restarts right away.. can you send me a link to the bin file you flashed on yours? They remove the old ones from the website...

@noseran 

I don't know what could be wrong, did you turn off the firewall ..? https://static.tp-link.com/2020/202001/20200123/Archer%20C6(EU)_V2_020110.zip

@Kreco me neither... the tftpd output seems right, but the router just restarts after:
Connection received from 192.168.0.86 on port 2302 [10/08 08:33:08.335]
Read request for file <ArcherC6v2_tp_recovery.bin>. Mode octet [10/08 08:33:08.336]
OACK: <timeout=5,> [10/08 08:33:08.336]
Using local port 58110 [10/08 08:33:08.336]
<ArcherC6v2_tp_recovery.bin>: sent 15442 blks, 7906289 bytes in 3 s. 0 blk resent [10/08 08:33:11.588]

@Kreco I can always upload the openwrt firmware successfully through tftpd, it uploads and the router starts processing and restarts after 1/2min, but if i try the original firmware, like i said before, it just reboots... i'm stuck...

@noseran 

Hey, did you deal with the problem? I waited for the new firmware and I could not stand it, I uploaded OpenWrt again, tested it and I want to go back to 1.2.1, but I can't, I do it as before and nothing. After flashing, it's still OpenWrt. Do you know any solution? I have the same as you.

@Kreco https://forum.openwrt.org/t/archer-c6-v2-eu-bricked-bootloop/71803