TP Link TL-WR840N v1.0 - stuck at CFE.

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babai93
DD-WRT Novice


Joined: 14 Mar 2015
Posts: 2

PostPosted: Sun Mar 15, 2015 3:01    Post subject: Re: Hey babai93 Reply with quote
nariub wrote:
Dont SCP anything. pop up a browser,
go to the Broadcom - CFE miniWeb Server web page on your TPLink

load the reference version of OpenWRT via the Broadcom - CFE miniWeb Server page.

when the TPlink reboots
login to openwrt on the tplink

get a copy of the factory firmware
dd that one to strip off the start of the file.

use the openwrt gui to install the modded factory firmware and reboot the TPLink again

when she comes back up she will -look- like a factory firmware.. but i am retentive.. reload the unmodified factory firmware (the one you used to create the modded firmware)

reboot again

tada.. back where you started


yap, I have done it... thanks.

but now my problem is the WiFi is not switching on automatically after rebooting

any suggestion plz!!
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Sky008
DD-WRT Novice


Joined: 27 Aug 2015
Posts: 3

PostPosted: Thu Aug 27, 2015 17:42    Post subject: Reply with quote
Today i was brick my TL-WR840N too. It was international version (Russia).
I put in there: Downloads › betas › 2015 › 08-25-2015-r27745 › tplink_tl-wr840nv1 (factory-to-ddwrt.bin).
Now it light up only the power and lan|wan port led.
If i try manually setting up IP in the PC and ping 192.168.1.1 it is not response, only 192.168.0.1 i get answer (ttl=100). But i can't open in browser CFE miniWeb Server (http://192.168.0.1).

Am i did a right steps?

Scanned "standard" ports don't gave anything, no one 80, 8080, 22 and etc was not found.

Or now can help only a Serial Cable with opening router box?

UPDATE: After few times of rebooting device, i got a 80 port and opened CFE miniWeb Server, after done whats was in few posts up. Now my device live on OEM FW Wink
PS: How i understood the port (web server) up only on few seconds after power up. So i done it quickly and it was open all the time, until i was download needed files to "re-flash".
smc007i
DD-WRT Novice


Joined: 19 Sep 2015
Posts: 3

PostPosted: Sat Sep 19, 2015 14:23    Post subject: More of the same Reply with quote
I have the same as Sky008, bricked my WR840N, I have no lights on the router except the power and the active connection. Then I found all the forum topics on it.

I put in the static setting into my PC that barkermn01 suggested. I only have my pc connected to the router, i.e. the router isn't connected to anything else at all.

I pinged 192.168.1.1 and get this:
Reply from 192.168.1.100: Destination host unreachable.
Reply from 192.168.1.100: Destination host unreachable.
Reply from 192.168.1.100: Destination host unreachable.
Reply from 192.168.1.100: Destination host unreachable.

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

I pinged 192.168.0.1 and get the same. Which I find confusing, is it connecting or not?

I tried rebooting the router a couple of times and tried to connect quickly after I turned it back on as Sky008 said, but I get no connection to anything through my browser typing in either of the IPs. I can't get to this CFE other people seem to be able to, what am I doing wrong?


It's a real shame that when I went to download the .bin file there wasn't an obvious/big warning about my router possibly being bricked, given it's a year after this was first posted!
Sky008
DD-WRT Novice


Joined: 27 Aug 2015
Posts: 3

PostPosted: Sat Sep 19, 2015 15:36    Post subject: Re: More of the same Reply with quote
smc007i wrote:

I pinged 192.168.0.1 and get the same. Which I find confusing, is it connecting or not?


Are you set IP in PC static as 192.168.0.100 or you trying to ping 192.168.0.1 with 192.168.1.x?
Try this (Russian language) http://forum.tp-linkru.com/viewtopic.php?f=303&t=6717 For me it not helped, but who knows, maybe you get lucky.
smc007i
DD-WRT Novice


Joined: 19 Sep 2015
Posts: 3

PostPosted: Sat Sep 19, 2015 16:10    Post subject: Reply with quote
I set my PC static 192.168.1.100 and typed "ping 192.168.1.1" and "ping 192.168.0.1" at the command prompt.

C:\Users>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.100: Destination host unreachable.
Reply from 192.168.1.100: Destination host unreachable.
Reply from 192.168.1.100: Destination host unreachable.
Reply from 192.168.1.100: Destination host unreachable.

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)

Thanks, but I can't read Russian.
Sky008
DD-WRT Novice


Joined: 27 Aug 2015
Posts: 3

PostPosted: Sun Sep 20, 2015 0:45    Post subject: Reply with quote
smc007i wrote:
I set my PC static 192.168.1.100 and typed "ping 192.168.1.1" and "ping 192.168.0.1" at the command prompt.

Sorry, but you tried to set IP on PC 192.168.0.100/24? Coz in this case you must be in one subnet with router.
smc007i
DD-WRT Novice


Joined: 19 Sep 2015
Posts: 3

PostPosted: Sun Sep 27, 2015 13:46    Post subject: Reply with quote
Ok, I moved onto my laptop and I have managed to connect to the CFE web mini server now on 192.168.1.1

I uploaded a generic version and now have OpenWRT on the router and eventually understood nariub instructions to get it on it's way back. Thanks.
dknabe
DD-WRT Novice


Joined: 30 Oct 2010
Posts: 1

PostPosted: Mon Sep 05, 2016 15:52    Post subject: Re: Hey babai93 Reply with quote
babai93 wrote:
nariub wrote:
Dont SCP anything. pop up a browser,
go to the Broadcom - CFE miniWeb Server web page on your TPLink

load the reference version of OpenWRT via the Broadcom - CFE miniWeb Server page.

when the TPlink reboots
login to openwrt on the tplink

get a copy of the factory firmware
dd that one to strip off the start of the file.

use the openwrt gui to install the modded factory firmware and reboot the TPLink again

when she comes back up she will -look- like a factory firmware.. but i am retentive.. reload the unmodified factory firmware (the one you used to create the modded firmware)

reboot again

tada.. back where you started


yap, I have done it... thanks.

but now my problem is the WiFi is not switching on automatically after rebooting

any suggestion plz!!


Any luck in fixing WiFi after doing this recovery?
With my full double recovery of stock TP-Link firmware, my radio is still not working. Key message in serial port is:
----------------
nf_nat_rtsp v0.6.21 loading^M
====>>>>Can not find test flag! ^M
====>>>>****RF Test Start!!!*****^M
====>>>>wlanSetWlanMac:558, set wlan mac fail!^M
====>>>>Rf test thread start
----------------
The Rf test never completes and WiFi never shows up.
Best guess is that the ART calibration settings in flash are missing due to failed dd-wrt attempt. But I can't find how to reset them to factory. Any clues are appreciated.
shazbot2012
DD-WRT Novice


Joined: 17 Sep 2018
Posts: 1

PostPosted: Mon Sep 17, 2018 6:00    Post subject: Reply with quote
To get it back to broadcasting I turned off
'enable wireless radio'
and
'enable ssid broadcast'

Save

then turn em back on again
____________________________________

and thx for the fix CrossScofield

without having to resort to linux I downloaded dd for windows
to alter the original firmware.

The same dd instructions work in windows cmd!
I copied the dd instruction from the forum and pasted in cmd and it works Smile
jurfrad
DD-WRT Novice


Joined: 23 Mar 2024
Posts: 3

PostPosted: Sat Mar 23, 2024 14:47    Post subject: Reply with quote
10 years after, I have this problem.
The links you guys shared are no longer available. Someone can help me please? I just bricked this router from a client and I need a solution please!

Thanks by the way
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 14249
Location: Texas, USA

PostPosted: Sat Mar 23, 2024 18:19    Post subject: Reply with quote
The Broadcom version 1.0 of this router is NOT currently supported, only the v1.1 Atheros (China) version is. The files you need are attached earlier in this thread.

WR840N v1.1 Atheros (China)

https://dd-wrt.com/support/router-database/?model=WR840N_1.x

https://wiki.dd-wrt.com/wiki/index.php/Supported_Devices#TP-Link

https://wikidevi.wi-cat.ru/TP-LINK_TL-WR840N_v1_(China_only?)

https://wikidevi.wi-cat.ru/TP-LINK_TL-WR840N_v1 (Broadcom)

TL-WR840N v1 (Broadcom) Bricked

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