Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

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though


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Joined: 07 December 2006
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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Sat Jun 13, 2020 22:51   Post subject: Linksys E4200 – Is it bricked?

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I’ve been using dd-wrt for x+ years and oasis’t managed to brick a router yet merely this could be the first. I got a Linksys E4200 v1 from a friend. I immediately reset it by holding the reset button for xxx seconds. When it booted up it had a 2013 dd-wrt build on it already (figured information technology was stock Linksys). It made me modify the password so I did then logged in and went to firmware upgrade page. I put on the latest E4200 Mini on information technology. It said successful only now I can’t make it information technology.

When I utilize power the Cisco logo flashes 2 or 3 times so stays off. I am continuously pinging the router and when I plug power to information technology, I get 3 or 4 successful pings to it then consummate loss afterwards that. It is not broadcasting wireless.

Anyone familiar with this router to know if thing is toast or not?




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kernel-panic69


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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Sat Jun thirteen, 2020 23:24   Postal service bailiwick:

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If you re-flashed a trailed mini image with “E4200” in it, you lot may have to recover. Which “latest” did you wink? 40559 or 43381? Yous may exist able to recover without serial:

https://www.linksys.com/us/back up-commodity?articleNum=137928

https://wiki.dd-wrt.com/wiki/index.php/Tftp_flash

https://wiki.dd-wrt.com/wiki/alphabetize.php/Recover_from_a_Bad_Flash

Worst case is serial recovery:

https://wiki.dd-wrt.com/wiki/index.php/Serial_Recovery

https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=693780




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Concluding edited by kernel-panic69 on Sat Jun xiii, 2020 23:27; edited 1 fourth dimension in total



though


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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Sat Jun 13, 2020 23:26   Post subject:

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Thanks for the reply. I flashed this one:

dd-wrt.v24-43381_NEWD-2_K2.6_mini-e4200.bin





kernel-panic69


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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Saturday Jun xiii, 2020 23:28   Post field of study:

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Should’ve flashed the mini-nv60k, not the trailed build.

https://wiki.dd-wrt.com/wiki/index.php/Linksys_E4200

You should consider migrating to K3.x builds as there may notwithstanding be other issues with K2.6.

Initial wink to same version k2.6 mega

flash 35531 k2.half-dozen mega

flash 35531 k3.10 mega (reset)

flash 42954 k3.x mega

flash 43028 k3.x mega – which volition be k4.4

wink 43381 k3.x mega




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though


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Joined: 07 Dec 2006
Posts: 189



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 17:57   Mail subject area:

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Well I had to unbrick the router by shorting ii pins as shown here:
https://youtu.be/tVxlBhJEfRo

After doing this I could easily TFTP the manufacturing plant firmware to information technology. Without shorting it would non allow the TFTP.

So hither is what happens: y’all can get from manufacturing plant to this dd-wrt build 21676 no problem: r21676/broadcom_K26/dd-wrt.v24-21676_NEWD-2_K2.6_mini-e4200.bin

Router appears to kick/piece of work properly.

The problem is if you upgrade to the mini-NV60K or trailed E4200 from the 21676 build, the router bricks.
The dd-wrt wiki specifically says only employ NV60K or trailed builds but neither work and volition result in a brick!



It successfully took the K3X Mega build just wireless operation was significantly slower than my AC1450 units with the K26 Mini builds.

Does anyone know which (if whatsoever) K26 Mini builds are uniform with the E4200? I prefer to stay away from Mega if possible.





kernel-panic69


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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun sixteen, 2020 18:38   Post subject:

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I own an E4200 v1. It is currently on the 43420 K3.x mega image. I’ve never heard of having to curt any pins to get TFTP to work.

Ping, power, put or ping, put, power.
https://wiki.dd-wrt.com/wiki/index.php/Linksys_E4200

21676 mini trailed k2.six

21676 mega nv60k k2.6

30880 mega nv60k k2.half dozen

35531 mega nv60k k2.6

35531 mega k3.ten

42954 mega k3.x

43028 mega k3.x

43420 mega k3.x

I know for a fact that
43028
did not brick (all) MIPS,
just it is the first public release with the 4.4.x kernel on MIPS,

and that is the quick short dirty version of upgrade steps to get to where mine is.




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though


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Posts: 189



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 21:eighteen   Mail subject:

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kernel-panic69 wrote:
I’ve never heard of having to brusk whatever pins to get TFTP to piece of work.

——-tftp will not be successful, while it’s bricked, without shorting the 2 pins. after you do this, tftp works flawlessly.

I just at present flashed from Mega-K3X to Mega-nv60k and the router is bricked over again. I’1000 officially giving up on it, putting stock back on and selling it.





kernel-panic69


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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun sixteen, 2020 21:48   Mail service subject:

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I don’t know what you’re doing wrong, and I have no idea why yous would revert from K3.10 to K2.6 without going back to stock firmware starting time. You tin can recover from a bad flash on the E4200 (sometimes). If you’re going to go through the trouble of shorting pins, you might as well have a series UART-USB-TTL adapter involved and just use the series recovery method. Perchance you need to slow down and take your time. I have been knee deep in this specific device for the past couple of years and have merely bricked information technology due to bad firmware builds, none of which I listed. I’ll give you $5 plus shipping if you lot are that bent on giving up.


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though


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Joined: 07 Dec 2006
Posts: 189



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 21:52   Post subject field:

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kernel-panic69 wrote:
I don’t know what you’re doing incorrect, and I have no thought why you would revert from K3.x to K2.6 without going back to stock firmware first. You lot can recover from a bad flash on the E4200 (sometimes). If yous’re going to go through the problem of shorting pins, you might besides have a serial UART-USB-TTL adapter involved and just utilize the serial recovery method. Mayhap yous need to tedious downward and have your time. I have been knee deep in this specific device for the past couple of years and have just bricked information technology due to bad firmware builds, none of which I listed.

I think the latest K26 E4200/nv60k builds are incompatible with the E4200, apparently and simple. Going to manufactory>21676 works perfect. But going from 21676 to the latest K26 nv60k or E4200 trail will plow it into toast.





kernel-panic69


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Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 22:10   Post subject:

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Which is why I listed the path to become to K3.x. I oasis’t tested K2.6 builds
since the shell issue was fixed
when two of mine were switched to being used for FreshTomato firmware development and testing. The K2.6 builds possibly take a soft brick issue, and if yous are selecting “reset to defaults afterward flashing” (which is broken), you are shooting yourself in the foot. A power cycle volition probably “gear up” the problem, or not. I’m not going to spend an hour explaining my experiences to a brick wall.



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though


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Joined: 07 December 2006
Posts: 189



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 22:13   Post subject:

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kernel-panic69 wrote:
The K2.six builds perhaps have a soft brick issue, and if you lot are selecting “reset to defaults after flashing” (which is cleaved), you are shooting yourself in the foot.



——Are people supposed to just know this??


kernel-panic69 wrote:
I’grand non going to spend an hour explaining my experiences to a brick wall.



——A brick wall? What are you referring to as a brick wall?




kernel-panic69


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Joined: 08 May 2018
Posts: 12600
Location: Texas, Us



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 22:26   Post discipline:

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though wrote:

kernel-panic69 wrote:
The K2.6 builds possibly have a soft brick effect, and if yous are selecting “reset to defaults after flashing” (which is broken), y’all are shooting yourself in the foot.



——Are people supposed to just know this??



If y’all’ve been using this firmware since 2006, it’s probably a given that the problem has come up if you have been following the forum.


though wrote:

kernel-panic69 wrote:
I’g not going to spend an hour explaining my experiences to a brick wall.



——A brick wall? What are you lot referring to as a brick wall?



Your lack of listening to experienced recommendations. Good luck.



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though


DD-WRT User

Joined: 07 Dec 2006
Posts: 189



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 22:34   Post subject:

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kernel-panic69 wrote:

though wrote:

kernel-panic69 wrote:
The K2.vi builds maybe have a soft brick issue, and if you lot are selecting “reset to defaults after flashing” (which is cleaved), you are shooting yourself in the human foot.



——Are people supposed to just know this??



If you’ve been using this firmware since 2006, it’s probably a given that the problem has come up if y’all accept been following the forum.

I’ve been using the firmware off and on for unlike projects since 2005. I haven’t been really following the forum in a long while…..


kernel-panic69 wrote:

though wrote:

kernel-panic69 wrote:
I’1000 not going to spend an hour explaining my experiences to a brick wall.



——A brick wall? What are you referring to every bit a brick wall?



Your lack of listening to experienced recommendations. Expert luck.

I’m the brick wall? I’ve tried every scenario possible, specifically following the E4200 wiki link that you linked, and the only ane that appears to piece of work (with lackluster performance) is going to mega-K3X. The other instructions that the wiki specifically says to do bricks the router. I would say either the router or someone else is a brick wall.

This router is going on Craigslist or to the dumpster.





kernel-panic69


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Joined: 08 May 2018
Posts: 12600
Location: Texas, USA



Can a Bricked Linksys E4200 Wireless Router Restore Its Original Firmware

Posted: Tue Jun 16, 2020 23:12   Mail service subject:

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I never had an issue with following that wiki. Sounds like you’re impatient or something. Only resets required are after initial flash and when moving from K2.6 to K3.10 in my experience. Ship information technology here and I’ll exercise information technology for you or effigy information technology out, throw it abroad, sell information technology, whatever. No pare off my olfactory organ.


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