Broken Archer c9 after a brand new installation

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riley83
DD-WRT Novice


Joined: 22 Oct 2018
Posts: 32

PostPosted: Sat Feb 03, 2024 9:29    Post subject: Broken Archer c9 after a brand new installation Reply with quote
Hi there

I have tried to read the wiki of the archer c9. But it's a mess in my head. Cant figure out what option I need to do to get my router back to stock firmware TP-Link.

Here is my concern

I downloaded the newest flash availble (now I know I took the wrong file after read the wiki). and
I flashed thru my gui interface in tp-link web gui.

I flashed it and after the flash the router keeps reboting all the time. I have tried to ping it using the ip 192.168.1.66 but response I get is request time out or destination host unavailble.

I have read that I can somehow tftp to it to then flash another image file on the bricked router.

Tried to 30/30/30 hard reset but same error I get. I don't have the knowledge to serial into to router Only have the option using the lan cable to work with it.

Can someone please explain it in easy terms if I can recover from this somehow and how to do it.

What option do I have to get this router back up, or is totally broken? as I said I don't know how serial into it.

I read that it specific installtion steps for the tp-link but saw it after the flash.

TP-Link version 4(EU)
Archer C9
Sponsor
apashi
DD-WRT Novice


Joined: 26 Mar 2020
Posts: 21
Location: RO

PostPosted: Sat Feb 03, 2024 14:24    Post subject: Reply with quote
Hello,

Had identical problem, solved by using recovery over TFTP.

For TFTP to work, you need to use 192.168.0.66 static IP.

Flash factory bin file from r44715, first rename it ArcherC9v1_tp_recovery.bin and hold RESET button for 5 sec, while turning router on.

Also have a look on this post: https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1296946#1296946 on how to update directly to latest DD-WRT release.

Please report updates.

Mod note: Corrected your typos, please take care when posting in the forum so as to not confuse people. Thx. -kp69
dale_gribble39
DD-WRT Guru


Joined: 11 Jun 2022
Posts: 2041

PostPosted: Sat Feb 03, 2024 14:47    Post subject: Reply with quote
The fact that it accepted the firmware confirms that it should be an EU version (there is a US version that is more identical to the R7000 than the EU version). You should still be able to TFTP the 33772 factory-to-ddwrt.bin file then upgrade from there.
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riley83
DD-WRT Novice


Joined: 22 Oct 2018
Posts: 32

PostPosted: Sat Feb 03, 2024 16:13    Post subject: Reply with quote
apashi wrote:
Hello,

Had identical problem, solved by using recovery over TFTP.

For TFTP to work, you need to use 192.168.0.66 static IP.

Flash factory bin file from r44715, first rename it ArcherC9v1_tp_recovery.bin and hold TEST button for 5 sec, while turning router on.

Also habe a look on this post: https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1296946#1296946 on how to update directly to latest DD-WRT release.

Plase report updates.


I have downloaded TFTPD64 set my lan card to static 192.168.0.66. Setting on my lan card
ip static 192.168.0.66
gateway 192.168.0.1

downloaded r44715 v4 image file.

the thing is the router just rebooting all the time so it loseing connection. What test buttom do you mean the reset buttom or?

also how can do I send the image file to the router by using tftpd64 is just browse to the given file and press copy or?
apashi
DD-WRT Novice


Joined: 26 Mar 2020
Posts: 21
Location: RO

PostPosted: Sat Feb 03, 2024 17:19    Post subject: Reply with quote
After setting the 192.168.0.66 static IP
Open TFTP and browse to the folder that have ArcherC9v1_tp_recovery.bin file
Turn off router
Press and hold RESET button
Power on the router and keep RESET button press until you see that the file is transfered from TFTP.

Wait for router to reboot and you should now install the other bin file from release folder.

Is this clear? Did you succeeded?
riley83
DD-WRT Novice


Joined: 22 Oct 2018
Posts: 32

PostPosted: Sun Feb 04, 2024 11:14    Post subject: Reply with quote
apashi wrote:
After setting the 192.168.0.66 static IP
Open TFTP and browse to the folder that have ArcherC9v1_tp_recovery.bin file
Turn off router
Press and hold RESET button
Power on the router and keep RESET button press until you see that the file is transfered from TFTP.

Wait for router to reboot and you should now install the other bin file from release folder.

Is this clear? Did you succeeded?


I getting some confused strange thing I read in the log now is that it cant find the file or create the file.
I get this is the log

Warning: Anticipation window in use
Connection received from 192.168.0.86 on port 4800 [04/02 12:08:33.246]
Read request for file <ArcherC9v3_tp_recovery.bin>. Mode octet [04/02 12:08:33.246]
File <ArcherC9v3_tp_recovery.bin> : error 2 in system call CreateFile Det går inte att hitta filen. [04/02 12:08:33.246]
Connection received from 192.168.0.86 on port 2298 [04/02 12:08:37.758]
Read request for file <ArcherC9v3_tp_recovery.bin>. Mode octet [04/02 12:08:37.758]
File <ArcherC9v3_tp_recovery.bin> : error 2 in system call CreateFile Det går inte att hitta filen. [04/02 12:08:37.758]
Connection received from 192.168.0.86 on port 4844 [04/02 12:09:38.761]
Read request for file <ArcherC9v3_tp_recovery.bin>. Mode octet [04/02 12:09:38.761]
File <ArcherC9v3_tp_recovery.bin> : error 2 in system call CreateFile Det går inte att hitta filen. [04/02 12:09:38.761]
Connection received from 192.168.0.86 on port 4992 [04/02 12:09:43.304]
Read request for file <ArcherC9v3_tp_recovery.bin>. Mode octet [04/02 12:09:43.304]
File <ArcherC9v3_tp_recovery.bin> : error 2 in system call CreateFile Det går inte att hitta filen. [04/02 12:09:43.304]

But the file are in that directory. Dont know what could be wrong?
riley83
DD-WRT Novice


Joined: 22 Oct 2018
Posts: 32

PostPosted: Sun Feb 04, 2024 11:29    Post subject: Reply with quote
apashi wrote:
After setting the 192.168.0.66 static IP
Open TFTP and browse to the folder that have ArcherC9v1_tp_recovery.bin file
Turn off router
Press and hold RESET button
Power on the router and keep RESET button press until you see that the file is transfered from TFTP.

Wait for router to reboot and you should now install the other bin file from release folder.

Is this clear? Did you succeeded?


Yes I succeeded the router is back up now with dd-wrt running good. Super thanks mate for helping me out you are a god saver:). I changed the file to v3 that file that was requested in the log.

Thanks again super thanks really:)
apashi
DD-WRT Novice


Joined: 26 Mar 2020
Posts: 21
Location: RO

PostPosted: Sun Feb 04, 2024 16:33    Post subject: Reply with quote
Welcome!
I am very happy to hear you solved your router.

Which DD-WRT release were you able to install?
riley83
DD-WRT Novice


Joined: 22 Oct 2018
Posts: 32

PostPosted: Sun Feb 04, 2024 17:35    Post subject: Reply with quote
apashi wrote:
Welcome!
I am very happy to hear you solved your router.

Which DD-WRT release were you able to install?


I picked r44715 Smile
apashi
DD-WRT Novice


Joined: 26 Mar 2020
Posts: 21
Location: RO

PostPosted: Mon Feb 05, 2024 16:06    Post subject: Reply with quote
I managed to update my C9v1 to latest DD-WRT release.

All this managed by some trick:
- I renamed archer-c9v1-webflash.bin to the latest TP-Link OEM firmware c9v1_un-up-ver4-1-0-P31[20160517-rel35411].bin
- uploaded and flashed from DD-WRT web interface
- magic happened

Smile



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kernel-panic69
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Location: Texas, USA

PostPosted: Mon Feb 05, 2024 23:12    Post subject: Reply with quote
Highly doubt that the file rename had anything to do with it. And it wasn't necessary to post it in many places.
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apashi
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Joined: 26 Mar 2020
Posts: 21
Location: RO

PostPosted: Tue Feb 06, 2024 6:13    Post subject: Reply with quote
Was the only thing that solved bootloop after updating with same file without changing the filename.
I am very happy for this discovery, so I shared in all the places that are relevant for this router model, so no one in future to experience same issue like I did.

Thanks!
kernel-panic69
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Joined: 08 May 2018
Posts: 14397
Location: Texas, USA

PostPosted: Tue Feb 06, 2024 12:50    Post subject: Reply with quote
Again, it was more likely that the file rename was completely unnecessary:
StealthNet wrote:
I have good news!!

Read this and follow the steps...
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327844

When I arrived at step 5, I simply flashed 20240129 r55033 and it is working!

Please stop adding confusion to resolutions.

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apashi
DD-WRT Novice


Joined: 26 Mar 2020
Posts: 21
Location: RO

PostPosted: Tue Feb 06, 2024 13:57    Post subject: Reply with quote
In my case, only file rename worked.

In your quote, he did the same, he renamed factory file.
kernel-panic69
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Joined: 08 May 2018
Posts: 14397
Location: Texas, USA

PostPosted: Tue Feb 06, 2024 15:11    Post subject: Reply with quote
Again, completely unnecessary, you are reading words that are not there:
apashi wrote:
In my case, only file rename worked.

apashi wrote:
- I renamed archer-c9v1-webflash.bin to the latest TP-Link OEM firmware c9v1_un-up-ver4-1-0-P31[20160517-rel35411].bin

apashi wrote:
In your quote, he did the same, he renamed factory file.

StealthNet wrote:
Read this and follow the steps...
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327844
When I arrived at step 5, I simply flashed 20240129 r55033 and it is working!

FCHNimda wrote:
5) Flash the actual version of DDWRT you want on the unit.

You are confusing this with step 3:
FCHNimda wrote:
3) Rename the r29409 factory-to-ddwrt.bin to c9v1_un-up-ver4-1-0-P12002[20180223-rel35954].bin

The only way to flash the actual version is with the archer-c9v1-webflash.bin,

And again, please STOP adding confusion to the solution.

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