Re: TP-Link Archer C7 AC1750 V2 TFTP Recovery

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Switch Editions? Cancel Sharing: Title: URL: Copy Share URL English RSSing.com RSSing>> Latest Popular Top Rated Trending Channel: Mike Palmer - Latest Comments NSFW? Claim 0 X Mark channel Not-Safe-For-Work? cancel confirm NSFW Votes: (0 votes) X Are you the publisher? Claim or contact us about this channel. X 0 Showing article 101 to 114 of 114 in channel 11039771 Channel Details:

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Thanks, I've just flashed dd-wrt on a brand new ac7 us version today, albeit not currently in the US, flashing it through the stock web UI, so apparently the lock is just some ID in the header of the firmware. dd-wrt is making US compatible firmware images, thankfully!

If interested:

ftp://ftp.dd-wrt.com/betas/201... (latest as time of writing)

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For me, it was 192.168.0.66 and 192.168.0.86. Still, my computer and the router would not communicate with each other by tftp.

Well, I finally got what I was doing wrong. And once I corrected my mistake, things went very well.

Good engineering from TP-Link to allow idiots like me to unbrick a well made router.

P.S. I got a Version 1.1, which is a bit more of a pain than Versions 2 and 3.

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Mike, you have honestly saved a drowning man. I was way in over my head messing with the firmware on my Archer C7 V2. Your article and everyone's questions helped me figure out how to un-paperweight my router.I wanted to add that I also had to set the TFTP server and NIC to 192.168.0.66 for it to find the firmware. Like Meor Naim Mkz, I re-installed the OEM firmware (after following the advice on OpenWrt to cut the first 0x20200 Bytes from original firmware). After the install, I accessed the router via 192.168.0.1

Cheers to you!-Jose

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I flashed https://goo.gl/skRXGC with https://goo.gl/TNqN9G using the router's OEM firmware flashing utility. And now I can't connect to the router through the Ethernet port. It doesn't enter recovery mode either. When I power on the machine while pressing down on the reset button, the WPS light turns on but the time the PC connects to the Ethernet (Ethernet link lighting up) the WPS light turns off and TFTP does nothing. Is there way I can unbrick it?

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I have a similar issue, where the router fetches the image, but fails properly boot. I have ordered as USB-to-TTL to try and debug the situation.

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Hello tiim I too have c7 v1.1 can't connect router to tftp please advice how u fixed it

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Mike, you have saved me quite a bit of time and I cannot thank you enough.

Like the other commenters though, I had to change my IP to 192.168.0.66, not 192.168.1.66After awhile of banging my head on a wall and then reading the comments and trying that, I was back up and running in under 5 minutes.

Thanks again mate!

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Thank you for the instructions. My experience was not as straightforward. Here is my routine to debrick Archer C7 v2 (EU) using ethernet dongle and Ubuntu 16.04 liveusb (some/many parts here can be superflous but it works so I really don't care :D ):

- Fireup Ubuntu- add universe repository from the software manager- install packages, setup xinetd:sudo apt-get install xinetd tftpd tftpsudo gedit /etc/xinetd.d/tftp - open gedit and copy the following

service tftp { protocol = udp port = 69 socket_type = dgram wait = yes user = nobody server = /usr/sbin/in.tftpd server_args = /tftpboot disable = no }- download Archer firmware version Archer C7_V2_150427 from http://static.tp-link.com/r... (NOTE!! The newer firmware prevents you from installing openwrt). Unzip the package-create /tftpboot, copy firmware with the correct name (at least for me), and change permissions. Finally restart xinetd sudo mkdir /tftpboot sudo cp /home/ubuntu/Downloads/'unzippedArcherfolder'/'ArcherFirmware' /tftpboot/ArcherC7v2_tp_recovery.bin sudo chmod -R 777 /tftpboot sudo chown -R nobody /tftpboot sudo service xinetd restart cd /tftpboot/- now continue in terminal

tftp 192.168.0.66binaryrexmt 1timeout 60trace

- now you can connect the ethernet cable to the LAN1 port and change the ethernet settings in the connection settings to (wired internet settings -> IP4v manual IP - add): IP 192.168.0.66, subnet 255.255.255.0, gateway 192.168.0.1

- go back to the terminal (with tftp open) and copy (shift+control+c) the following command:put ArcherC7v2_tp_recovery.bin

- turn the router on while holding down the wps-button, with your other hand in the terminal paste your command until it says it sent away something (e.g. "sent ...")

- wait for a good 3 minutes, and you should be able to open 192.168.0.1 for router configuration. With this older firmware you can now simply download the factory bin-file from openwrt page (change the name to something short!). Openwrt should now install without problems.

-in terminal open telnet connection and change root passwordtelnetopen 192.168.1.1passwd

- open ssh connection and install stuff you need e.g athk10, cant remember all the commands but something like thisssh [email protected] passwordopkg updateopkg install lucie-ssl athk10 firmware

Check the correct athk10 and firmware commands form the beginners guide on openwrt.org. Note that wireless connection is turned off by default, easy to open using your browser (192.168.1.1). Happy surfing!!

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Thanks very much, it really worked! :) My C7 had a different IP (192.68.0.1 instead of 192.168.1.1)

from the beginning, so I tried

192.168.0.66 instead of 192.168.1.66,

and it worked. Good luck everyone!

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Hey I know this is a year old but I am really needing some help here. I also have an Archer C7 v1.1 and messed up trying to restore firmware after flashing openWRT. I am trying to do TFTP recovery and it appears it is sending something to the router and then nothing happens. For the v1.1 which file is it looking for? ArcherC7v1_tp_recovery.bin or ArcherC7v2_tp_recovery.bin

I have tried both with no luck.. unless I have the wrong firmware? I downloaded it from TP link website and chose the V1. Please help!

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Helped me too. Thanks.In my case US archer C7 V2, to get into recovery in off state I press reset and then power button, wait for 6 seconds and release reset. Mine looks for tftp on 192.168.0.66

If in doubt, fire up `sudo tcpdump -i eth0` assuming you connect lan port of the router to your eth0 interface, and look for ARP requests for the above IP or some such.

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I have version 1. I am unable to find any case online where someone could successfully flash alternative firmware for it. Mine was bricked after attempting the OpenWRT flash. I was only able to restore to stock. For v1 your computer/TFTP server IP needs to be 192.168.0.66, netmask 255.255.255.0. I had the gateway set to 192.168.0.1 although I am not sure if this is necessary. After installing atftp, it automatically created the directory /srv/tftp. (I am using Debian 9.) I did chmod 777 on both of these directories. I copied the stock image to the directory and named it ArcherC7v1_tp_recovery.bin I changed permissions on it to 666 just in case if it was necessary. I turned on my connected router and held down the reset button until I saw the WPS light on for a bit (maybe 5-10 seconds holding it down since turning on the router). (It is the led with the arrows going in a circle.) Then I released it. (I am not sure how important certain timing is.) Now wait for a bit until the lights seem to become normal again. The power light will be solid. The system light (asterisk led), wifi lights, and applicable ethernet lights will be flashing randomly. Before doing any of this be sure to disable the firewall on your computer/TFTP server. I failed a few attempts because I forgot this. Since v1 has not received any updates since 2014 it may be a good idea to buy a new router anyways with supported firmware. I just bought the TP-Link WR1043N. Only the snapshot version of OpenWRT is available currently for version 5. I am hoping it will work well.

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Now I'm running r44797 and don't have an issue with TX.

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Thanks for this!

A couple of points I want to add on the "server" side, i.e. the machine where atftpd is installed. For me, this was my Skylake Dell Latitude E5470.

* Make sure your local network adapter is not disabled in the BIOS (obviously)

* Ensure that your local NIC shows as "UP" in the output of "ip link". If you see NO_CARRIER, it will not work.

* If you do see NO_CARRIER, try disabling powersaving on the NIC. I had enabled powertop --auto-tune, which helpfully disabled my NIC. For me, this means that the "Runtime PM for PCI Device Intel Corporation Ethernet Connection (2) I219-LM" tunable should be "BAD" to ensure that powersaving is disabled.

* If you use "ip addr" to set the IP address of the interface, make sure to specify the netmask. The following commands worked for me:

$ sudo ip addr add 192.168.1.66/24 dev enp0s31f6$ sudo ip addr add 192.168.0.66/24 dev enp0s31f6

If you leave out the /24 part, you will get a 255.255.255.255 netmask and you will only be able to talk to yourself.

And some hints on atftpd:

* The directory in the original post has a typo. Correct version: /srv/tftp/ArcherC7v2_tp_recovery.bin

* On Ubuntu 18.04, I followed some instructions to disable inetd in /etc/default/atftpd - I am not sure if this is necessary.

* You can test your atftpd setup by running:

$ sudo apt install atftp$ echo "get ArcherC7v2_tp_recovery.bin" | atftp$ ls -al ArcherC7v2_tp_recovery.bin # file is in local directory

* You can watch transfer logs (on Ubuntu 18.04, possibly requires disabling INETD as above). Hint: you should see your test transfer above.

$ sudo journalctl --follow -xu atftpd

-- The start-up result is RESULT.Mär 21 15:10:35 trabant atftpd[5424]: Serving /srv/tftp/ArcherC7v2_tp_recovery.bin to 127.0.0.1:42992

Mär 21 15:37:41 trabant atftpd[5424]: Serving ArcherC7v2_tp_recovery.bin to 192.168.0.86:1222

Many of the additional ideas for atftp I gathered here: https://www.hiroom2.com/201...

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