According to this pdf I attached which I found for tplink 841nv9.I followed every step mentioned in pdf.
understracker wrote:
You can easily debrick your 841ndv8 using the build in tftp client in the bootloader. The tftp server must run on your pc and have ip address 192.168.0.66
1. download ftp://ftp.dd-wrt.com/betas/2016/04-25-2016-r29519/tplink_tl-wr841ndv8/factory-to-ddwrt.bin at your desktop
2. rename it to wr841nv8_tp_recovery.bin
3. download http://tftpd32.jounin.net/download/tftpd32.452.zip at your desktop
4. unzip tftpd32.452.zip eg in folder tftpd32.452 using right click->extract to
5. put wr841nv8_tp_recovery.bin aside tftpd32.exe in folder tftpd32.452
6. change your Ethernet adapter ipv4 address to static addess 192.168.0.66/subnet mask 255.255.255.0/leave gateway and dns void
7. connect the lan1 port of you router to pc's ethernet port
8. start tftpd32.exe and on server interface select your Ethernet nic which should have ip 192.168.0.66. If you have a firewall you may need to disable it or put tftp32 to its exception list.
9. fire up your router WHILE pressing reset for three seconds
10. you should see an incoming connection in the tftp32 gui. if not, something went wrong. Repeat the above process more carefully.
11. when download completes, your router shall reboot
12. restore the Ethernet NIC address to automatic assignment
13. you must be able to reach you shine new dd-wrt at 192.168.1.1
remember the recovery image filename is wr841nv8_tp_recovery.bin for v8.
tou.manokat@gmail.com wrote:
I am attaching the exact stock file that I used when I unbricked my 841ND v8. Check the attachment.
Before knowing there was an alternative to serial unbricking I had used a Nokia DKU-5 to unbrick it when it got bricked the first time.
From the serial console log you provided it would appear that your 841 v8.4 is expecting a TFTPD IP of
192.168.1.100 because you have executed these env setting operands:
The above commands are actually optional, you can skip those and the router will expect a firmware file from TFTPD IP 192.168.0.66. If you put those commands, then set your LAN IP of your computer to 192.168.1.100 and put the stock firmware wr841nv8_en_3_15_9_up_boot(140724).bin in the TFTPD folder. You need a TFTPDaemon or server and not a TFTP client. Your computer will work as a server to send the firmware file to the router.
I also followed steps provided by user understracker and tou.manokat@gmail.com many times with no success.Further I tried disabling firewall,antivirus and user account control none helps.I am using windows 7 64 bit and tried using both nokia dku 5 and profilic PL2303XA adapters.tried changing ip
addresses to 192.168.0.66/255.255.255.0 and 192.168.1.100/255.255.255.0 on ethernet adapter with no success
Posted: Sun Jul 24, 2016 13:12 Post subject: Re: TFTP
ian5142 wrote:
When it is looking for a tftp file, click upload on the tftp program on your computer. You may want to try a shorter name like firmware.bin
It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Hi,I am getting this on putty.I tried changing file name factory-to-ddwrt.bin to code.bin or firmware.bin but still not successful in uploading firmware.Is router refusing firmware?
and what do you mean by It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Posted: Sun Jul 24, 2016 20:07 Post subject: Re: TFTP
I just flashed my 841ND v8 via TFTPD and reset button method. I took 2 screenshots. First screen shot is taken just 1 second after the TFTPD just started uploading the file to the router. The second after the uploading is done. I did 2 times and were both successful. Very important to remember that firewall has to be turned off. After the uploading, TFTPD software will auto select the loop device (127.0.0.1).
If you do not put the firmware file in the TFTPD folder, the uploading will fail, but the log file will mention the file name being requested.
alifarrukh wrote:
ian5142 wrote:
When it is looking for a tftp file, click upload on the tftp program on your computer. You may want to try a shorter name like firmware.bin
It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Hi,I am getting this on putty.I tried changing file name factory-to-ddwrt.bin to code.bin or firmware.bin but still not successful in uploading firmware.Is router refusing firmware?
and what do you mean by It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
This is the screenshot of the log when I took out the file wr841nv8_tp_recovery.bin from the directory then I started the reset process on the router. The log actually records the file name being requested, namely wr841nv8_tp_recovery.bin. Try the TFTPD server that I used and try not to put the file wr841nv8_tp_recovery.bin in the TFTPD folder. The error log should tell you the real file name being requested by your router. However if you use serial device and TFTPD method, then you have to specify the file name and the memory address. Try reset button (lock light) and TFTPD first. Or if you want to stick to using the serial device, use another TFTPD program like the one I used which is known to have worked well. _________________ Linksys 54G v2
Linksys 54G v6
Linksys 54GS v6
Linksys 120N
Linksys Valet-M10 Tomato v132
Linksys Valet-M20 Tomato V132
Netgear WNR3400 Advanced Tomato
Netgear WNR3400 Advanced Tomato
TRENDNet TEW-632BRP DD-WRT r22118
TRENDNet TEW-632BRP DD-WRT r22118
Buffalo G300NH DD-WRT r22118
TPLINK WNDR1043ND DD-WRT r22118
TPLINK WNDR1042ND Stock
TPLINK WNDR841ND r22118
DLINK DIR-835 A1 r22118
DLINK DIR-835 A1 r22118
DLINK DIR-835 A1 r22118
DLINK DIR-501 Stock firmware
DLINK WBR-2310 Stock firmware
Linksys E3000 Shibby Tomato
Linksys E2500 Advanced Tomato
Netis WF-2404 Stock
Netis WF-2404 Stcck
Belkin N600 Extender (Bricked on its own)
Last edited by tou.manokat@gmail.com on Sun Jul 24, 2016 23:37; edited 2 times in total
Posted: Mon Jul 25, 2016 4:03 Post subject: Re: TFTP
alifarrukh wrote:
ian5142 wrote:
When it is looking for a tftp file, click upload on the tftp program on your computer. You may want to try a shorter name like firmware.bin
It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Hi,I am getting this on putty.I tried changing file name factory-to-ddwrt.bin to code.bin or firmware.bin but still not successful in uploading firmware.Is router refusing firmware?
and what do you mean by It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Your router cannot communicate with the tftp server on your PC. The serial cable works, no issues there.
Did you put firmware.bin/code.bin/factory-to-ddwrt.bin in "new folder" (root folder) at your desktop when running SolarWinds tftp server?
Have you tried every LAN port (LAN1-4)?
Have you tried WAN port (just in case)?
Does the "local area connection" connect momentarily when you turn on your router while pressing reset or is it always disconnected? If it doesn't then there might be an issue with your pc's NIC or your Ethernet cable. The NIC might be the reason that your pc crashed in the first place!
Furthermore:
You night have a "double extension" issue. Have you disabled "hide extensions for known files"?
Guys I finally unbricked my router tp link 841nv8 using tftp method.This time I used laptop with new ethernet cable on windows 7 ultimate 32 bit.My previous pc bsod due to wifi adapter error in middle of updating which caused bricking of this router originally.Thanks to these people for helping out
tou.manokat@gmail.com
understracker
ian5142
Last edited by alifarrukh on Mon Jul 25, 2016 22:12; edited 2 times in total
Posted: Mon Jul 25, 2016 12:42 Post subject: Re: TFTP
understracker wrote:
alifarrukh wrote:
ian5142 wrote:
When it is looking for a tftp file, click upload on the tftp program on your computer. You may want to try a shorter name like firmware.bin
It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Hi,I am getting this on putty.I tried changing file name factory-to-ddwrt.bin to code.bin or firmware.bin but still not successful in uploading firmware.Is router refusing firmware?
and what do you mean by It times out after 3 tries so you need to click enter in one screen and then click upload on the other screen at just about the same time.
Your router cannot communicate with the tftp server on your PC. The serial cable works, no issues there.
Did you put firmware.bin/code.bin/factory-to-ddwrt.bin in "new folder" (root folder) at your desktop when running SolarWinds tftp server?
Have you tried every LAN port (LAN1-4)?
Have you tried WAN port (just in case)?
Does the "local area connection" connect momentarily when you turn on your router while pressing reset or is it always disconnected? If it doesn't then there might be an issue with your pc's NIC or your Ethernet cable. The NIC might be the reason that your pc crashed in the first place!
Furthermore:
You night have a "double extension" issue. Have you disabled "hide extensions for known files"?
PS: you should not run two or more tftp servers at the same time. They will conflict with each other.
You were right after I changed my ethernet cable router received the firmware which I tried out later .
Tried lan port 4 it works.There was dust in lan port 1 which I think was causing problem,after cleaning lan port 1,it works.
I only ran one tftp server at a time placing firmware file in new folder on desktop.
tou.manokat@gmail.com wrote:
This is the screenshot of the log when I took out the file wr841nv8_tp_recovery.bin from the directory then I started the reset process on the router. The log actually records the file name being requested, namely wr841nv8_tp_recovery.bin. Try the TFTPD server that I used and try not to put the file wr841nv8_tp_recovery.bin in the TFTPD folder. The error log should tell you the real file name being requested by your router. However if you use serial device and TFTPD method, then you have to specify the file name and the memory address. Try reset button (lock light) and TFTPD first. Or if you want to stick to using the serial device, use another TFTPD program like the one I used which is known to have worked well.
Look at the screenshot posted above.I just followed your methods more carefully and I was successful.
tou.manokat@gmail.com wrote:
I just flashed my 841ND v8 via TFTPD and reset button method. I took 2 screenshots. First screen shot is taken just 1 second after the TFTPD just started uploading the file to the router. The second after the uploading is done. I did 2 times and were both successful. Very important to remember that firewall has to be turned off. After the uploading, TFTPD software will auto select the loop device (127.0.0.1).
If you do not put the firmware file in the TFTPD folder, the uploading will fail, but the log file will mention the file name being requested.
Thanks for trying it out for me and providing proof that tftp method works.
tou.manokat@gmail.com wrote:
Your serial log says:
wasp> tftpboot 0x81000000 wr841nv8_en_3_15_9_up_boot(140724).bin
enet1 port2 up
dup 1 speed 1000
Using eth1 device
So, the router is expecting eth1, which is LAN ports on 841N v8.4. Other TPLINK routers like 1043NDv8, the LAN port (switch) devices are eth0.
It looks like serial was not needed anway, as I was successful with tftp method.Later I was also successful with serial method on desktop pc,windows 7 64bit
It turns out ethernet cable had a problem along with lan 1 port of router which were preventing successful unbricking.
Guys I finally unbricked my router tp link 841nv8 using tftp method.This time I used laptop with new ethernet cable on windows 7 ultimate 32 bit.My previous pc bsod due to wifi adapter error in middle of updating which caused bricking of this router originally.Thanks to these people for helping out
tou.manokat@gmail.com
understracker
ian5142
Guys I finally unbricked my router tp link 841nv8 using tftp method.This time I used laptop with new ethernet cable on windows 7 ultimate 32 bit.My previous pc bsod due to wifi adapter error in middle of updating which caused bricking of this router originally.Thanks to these people for helping out
tou.manokat@gmail.com
understracker
ian5142
Posted: Fri Jul 29, 2016 13:51 Post subject: tl-841nd v8 dead or bricked
Hi,
So I have an tl-841nd v8 and I used on this router openwrt. I wanted to back to original firmware but of course I bricked it...
So my question is, is the router is dead or brick?
The signs:
when I turn on the router the power led is on and all another leds blinks (2s)
when I turn on the router with pressed reset key then the right led on after 5s, after 5s it off and blinks again
Posted: Sat Jul 30, 2016 0:53 Post subject: Re: tl-841nd v8 dead or bricked
Read the previous messages closely, the problem with your router can be resolved easily with TFTPD and reset button.
hrbi80 wrote:
Hi,
So I have an tl-841nd v8 and I used on this router openwrt. I wanted to back to original firmware but of course I bricked it...
So my question is, is the router is dead or brick?
The signs:
when I turn on the router the power led is on and all another leds blinks (2s)
when I turn on the router with pressed reset key then the right led on after 5s, after 5s it off and blinks again
Posted: Sat Jul 30, 2016 12:30 Post subject: Re: tl-841nd v8 dead or bricked
Thanks man, this method was unknow for me. I read and do it and it's works again
tou.manokat@gmail.com wrote:
Read the previous messages closely, the problem with your router can be resolved easily with TFTPD and reset button.
hrbi80 wrote:
Hi,
So I have an tl-841nd v8 and I used on this router openwrt. I wanted to back to original firmware but of course I bricked it...
So my question is, is the router is dead or brick?
The signs:
when I turn on the router the power led is on and all another leds blinks (2s)
when I turn on the router with pressed reset key then the right led on after 5s, after 5s it off and blinks again
Posted: Sat Jul 30, 2016 17:59 Post subject: Re: tl-841nd v8 dead or bricked
Glad to hear your router is up and running with DD-WRT again.
hrbi80 wrote:
Thanks man, this method was unknow for me. I read and do it and it's works again
tou.manokat@gmail.com wrote:
Read the previous messages closely, the problem with your router can be resolved easily with TFTPD and reset button.
hrbi80 wrote:
Hi,
So I have an tl-841nd v8 and I used on this router openwrt. I wanted to back to original firmware but of course I bricked it...
So my question is, is the router is dead or brick?
The signs:
when I turn on the router the power led is on and all another leds blinks (2s)
when I turn on the router with pressed reset key then the right led on after 5s, after 5s it off and blinks again
