Netgear WNR834Bv2 - is it supported?

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sparkie
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Joined: 28 Feb 2008
Posts: 158
Location: NY USA

PostPosted: Fri Mar 06, 2009 4:17    Post subject: Re: WNR834Bv2 Bricked - JTAG Help Reply with quote
storm_to wrote:
PLEASE HELP!!!
Note: Length was being set to 8 and now it's 5
Number under chip ID changed from (9470417F) to (4A3820BF)


Looks like something is wrong with your jtag cable. Or, you're not launching the software fast enough and it's not properly clearing the watchdog. It's tough to tell. My guess would be something is wrong with your cable tho.

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Netgear WNR834Bv2 - Save yourself from the brick.
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storm_to
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Joined: 04 Mar 2009
Posts: 11

PostPosted: Fri Mar 06, 2009 15:20    Post subject: Re: WNR834Bv2 Bricked - JTAG Help Reply with quote
sparkie wrote:
Looks like something is wrong with your jtag cable. Or, you're not launching the software fast enough and it's not properly clearing the watchdog. It's tough to tell. My guess would be something is wrong with your cable tho.


SOLVED after 2 days of debugging! It was a combination of bad ground (cold solder) and my JTAG cable (old printer cable) being too long. After resoldering ground and cutting the cable down to under 10 inches everything worked. I am now DE-BRICKED!
Notes:
My POWER LED was always stuck on amber (no blinking), blue WLAN LED was ON, all others OFF
Flashing CFE+NVRAM+CUSTOM did not help. This is what worked using Tornado's RC3!
1. Had to -flash:wholeflash 1st (wnr834bv2_2_1_13_na.bin) took 2.5 hours
2. Reboot, now all ports green LEDs were ON. No PING yet.
3. -flash:custom /window:1fc00000 /start:1ffe0000 /length:10000
4. Reboot, all green LEDs ON, no PING yet
5. -flash:nvram
6. Without rebooting -flash:cfe
7. Reboot and now all LEDs behave fine and there is PING response on 192.168.1.1
8. TFTP dd-wrt.v24-9856_NEWD_mini_wnr834bv2.chk
9. Connect with IE to http://192.168.1.1 and there's a perfectly operational DD-WRT ready for config Very Happy
WEEEEEEEEEEEEEE!!!!!

Please note that this router was bricked in my oppinion because it was a TigerDirect (Toronto, Canada) refurb item and I believe they loaded some new version of firmware which was not compatible with DD-WRT_mini.chk
sparkie
DD-WRT User


Joined: 28 Feb 2008
Posts: 158
Location: NY USA

PostPosted: Fri Mar 06, 2009 19:16    Post subject: Re: WNR834Bv2 Bricked - JTAG Help Reply with quote
storm_to wrote:
1. Had to -flash:wholeflash 1st (wnr834bv2_2_1_13_na.bin) took 2.5 hours


* 1. Download one of the binpacks WNR834Bv2 North America. WNR834Bv2 World Wide, and the custom.bin
* 2. JTAG the router
* 3. Erase the kernel portion of the flash
* 4. Reflash the 'custom' section of the flash (hex edit the custom.bin and put your own mac address in at offset 40~45!)
* 4a. flash parameters: -flash:custom /window:1fc00000 /start:1ffe0000 /length:10000
* 5. Power cycle the router and the router will respond with a constant ttl=100 ping response
* 6. TFTP a dot CHK file appropriate to your router (NA or WW)
* 6a. You will know that the transfer was completed and the flash process is working when router power light blinks amber on and off once per second. After a few minutes, the router will begin to respond with a ttl=64 ping and will be functional again.


Did you follow those instructions? If not .. that would have saved you 2.5 hours. There shouldn't really be a need to flash the whole flash if you follow those.

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Netgear WNR834Bv2 - Save yourself from the brick.
storm_to
DD-WRT Novice


Joined: 04 Mar 2009
Posts: 11

PostPosted: Fri Mar 06, 2009 21:53    Post subject: Reply with quote
@sparkie
Yes I download custom_nomac.bin and replaced the mac value with the one from the sticker on the back of my router.
-flash:custom /window:1fc00000 /start:1ffe0000 /length:10000
and it was still dead, no ping response.
Tried flashing CFE + NVRAM and that didn't work either.
wholeflash was the next thing I tried and that fixed it for me.
Thanks.
sparkie
DD-WRT User


Joined: 28 Feb 2008
Posts: 158
Location: NY USA

PostPosted: Sat Mar 07, 2009 2:29    Post subject: Reply with quote
storm_to wrote:
@sparkie
Yes I download custom_nomac.bin and replaced the mac value with the one from the sticker on the back of my router.


You need to erase the kernel portion of the flash prior to flashing the custom area. But at any rate, I'm glad it's working for you now.

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Netgear WNR834Bv2 - Save yourself from the brick.
QuakerOatz
DD-WRT Novice


Joined: 12 Mar 2007
Posts: 8

PostPosted: Tue Mar 10, 2009 19:59    Post subject: WNR834B Bricked and Solved!!!! Reply with quote
Oh yes my friend, I flashed with the "Netgear WNR834Bv2 Firmware: Special file for initial flashing via WEB" called dd-wrt.v24_std-wnr834bv2_07280105.chk found at the super spiffy
Router-Database, and yes my friend it Bricked the $@%# out of my router, and yes, I swore and swore (to myself i might add!)

For how many routers had I bought? 4! Yes 4!

Even tigerdirect told me I shall not return them to the store! And I swore and swore!

But do not fret my friend for my blinky green power light mocked me more,
And made me download TFTP2 for yore:
http://www.dd-wrt.com/dd-wrtv2/downloads/others/tornado/Windows-TFTP/tftp2.exe


By using 192.168.1.1, no password and wnr834bv2_2_1_13_na_only.chk in TFTP2, it flashed and flashed and flashed away,
By the end I had my router back and all seemed to unfrey,
I flashed again same as above using dd-wrt.v24-9856_NEWD_mini_wnr834bv2.chk,
And once again, a flashed my friend with dd-wrt.v24-11650_NEWD_std.bin

I now have DDWRT on the router yore,
I hope you too have success, when it becomes YOUR chore.

The long and short of it, is here:
http://www.dd-wrt.com/wiki/index.php/Installation#Netgear_WNR834Bv2

Good luck!
sparkie
DD-WRT User


Joined: 28 Feb 2008
Posts: 158
Location: NY USA

PostPosted: Wed Mar 11, 2009 2:03    Post subject: dd-wrt versions Reply with quote
I've sent an email regarding the supported devices lookup tool giving out the stable version of dd-wrt which apparently just bricks the router. I just finished trying it again on a fresh one and received the same results as everyone else.

Eko's version works just fine from the get go however.

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Netgear WNR834Bv2 - Save yourself from the brick.
jayntguru
DD-WRT Novice


Joined: 12 Mar 2009
Posts: 1

PostPosted: Thu Mar 12, 2009 4:53    Post subject: Reply with quote
I already have the "DD-WRT v24 (07/03/08 ) mini
(SVN revision 9856M TNG Eko)" build loaded on my wnr834bv2, but I want a newer one.

No matter which one I try from here http://www.dd-wrt.com/dd-wrtv2/down.php?sort=date&path=downloads/others/eko/V24_TNG/ , it doesn't work and gives the message: "incorrect image file".

One that I specifically tried was http://www.dd-wrt.com/dd-wrtv2/downloads/others/eko/V24_TNG/svn11580/dd-wrt.v24-11580_NEWD_mini_wnr834bv2.chk

I think I am missing something obvious. Ideas?

Thanks,
Jay
tipstir
DD-WRT User


Joined: 05 Nov 2007
Posts: 115
Location: USA

PostPosted: Thu Mar 12, 2009 6:17    Post subject: Reply with quote
jayntguru wrote:
I already have the "DD-WRT v24 (07/03/08 ) mini
(SVN revision 9856M TNG Eko)" build loaded on my wnr834bv2, but I want a newer one.

No matter which one I try from here http://www.dd-wrt.com/dd-wrtv2/down.php?sort=date&path=downloads/others/eko/V24_TNG/ , it doesn't work and gives the message: "incorrect image file".

One that I specifically tried was http://www.dd-wrt.com/dd-wrtv2/downloads/others/eko/V24_TNG/svn11580/dd-wrt.v24-11580_NEWD_mini_wnr834bv2.chk

I think I am missing something obvious. Ideas?

Thanks,
Jay


Notes:

Flashing Netgear WGR614v8, WGR614L, WGR614WW

For first flash (running original Netgear's firmware) or for tftp
please use dd-wrt.v24-11650_NEWD_mini_wgr614v8-L.chk file.


For upgrade when already running dd-wrt (IMPORTANT!!!):

- if your dd-wrt build is less then 11600 please
use dd-wrt.v24-11650_WGR614v8-L_mini.bin file. Then
you can upgrade to any build listed below.

- if your dd-wrt build number is greater then 11600,
you can upgrade directly using any build listed below.

Flashing Netgear WNR834bv2

For first flash (running original Netgear's firmware) or for tftp
please use dd-wrt.v24-11650_NEWD_mini_wnr834bv2.chk file.

For upgrade when already running dd-wrt you can use any build
listed below:

Compatible builds:

dd-wrt.v24-11650_NEWD_mini.bin
dd-wrt.v24-11650_NEWD_mini_hotspot.bin
dd-wrt.v24-11650_NEWD_std.bin<-this one I am using..
dd-wrt.v24-11650_NEWD_std-nokaid.bin
dd-wrt.v24-11650_NEWD_std-nokaid_nohotspot_nostor.bin
dd-wrt.v24-11650_NEWD_voip.bin
dd-wrt.v24-11650_NEWD_openvpn_jffs_small.bin
dd-wrt.v24-11650_NEWD_openvpn.bin

Don't forget to do the 30/30/30 reset rule.. Between flashing before and after..

1. download and flash chk
ftp://dd-wrt.com/others/eko/V24_TNG/svn11650/dd-wrt.v24-11650_NEWD_mini_wnr834bv2.chk

2. download and flash bin
ftp://dd-wrt.com/others/eko/V24_TNG/svn11650/dd-wrt.v24-11650_NEWD_std.bin

If you already have the chk installed like a prior build then skip to step 2 instead.

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Best Regards,
Tipstir

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weatherfreak
DD-WRT Novice


Joined: 12 Mar 2009
Posts: 2

PostPosted: Thu Mar 12, 2009 22:38    Post subject: Dang thing!! Reply with quote
Okay guys, got a good one happening here!! Rolling Eyes


Have a wnr834b-v2 here that is flatly refusing to accept any upload files, either .bin or .chk!!!

All I get when I try to upload a file

Quote:
Invalid filename was provided, please enter again.


I have tried:

dd-wrt.v24-11650_NEWD_mini_wnr834bv2.chk
dd-wrt.v24-11580_NEWD_mini_wnr834bv2.chk
wnr834bv2_1_0_32_na.chk
wnr834bv2_2_0_8_2_0_8_na_only.chk
wnr834bv2_2_1_13_na_only.chk

all give the same error message. Have done the 30/30/30 reset everytime, no change.

Had less problems getting dd-wrt up and running on my old Motorola wr850g-v3.
Going crazy!! Mad Confused

George

EDIT:
-----

Found out what was causing all my problems.... Firefox!!! The minute I brought IE out of mothballs and fired it up, the upgrade files were accepted. Confused Rolling Eyes

Found it in an obscure post somewhere not to use Firefox with some other brand router.
sparkie
DD-WRT User


Joined: 28 Feb 2008
Posts: 158
Location: NY USA

PostPosted: Sat Mar 14, 2009 2:44    Post subject: Reply with quote
jayntguru wrote:
I already have the "DD-WRT v24 (07/03/08 ) mini
(SVN revision 9856M TNG Eko)" build loaded on my wnr834bv2, but I want a newer one.

No matter which one I try from here http://www.dd-wrt.com/dd-wrtv2/down.php?sort=date&path=downloads/others/eko/V24_TNG/ , it doesn't work and gives the message: "incorrect image file".

One that I specifically tried was http://www.dd-wrt.com/dd-wrtv2/downloads/others/eko/V24_TNG/svn11580/dd-wrt.v24-11580_NEWD_mini_wnr834bv2.chk

I think I am missing something obvious. Ideas?

Thanks,
Jay


Dot CHK files are only for upgrading from netgear's firmware to dd-wrt's firmware. Once you're in dd-wrt you only need to use bin files.

_________________
Netgear WNR834Bv2 - Save yourself from the brick.
sparkie
DD-WRT User


Joined: 28 Feb 2008
Posts: 158
Location: NY USA

PostPosted: Sat Mar 14, 2009 2:45    Post subject: Re: Dang thing!! Reply with quote
weatherfreak wrote:
Found out what was causing all my problems.... Firefox!!! The minute I brought IE out of mothballs and fired it up, the upgrade files were accepted. Confused Rolling Eyes

Found it in an obscure post somewhere not to use Firefox with some other brand router.


Yes, it's in the hardware specific notes for this router as well.

_________________
Netgear WNR834Bv2 - Save yourself from the brick.
weatherfreak
DD-WRT Novice


Joined: 12 Mar 2009
Posts: 2

PostPosted: Sat Mar 14, 2009 6:02    Post subject: Re: Dang thing!! Reply with quote
sparkie wrote:
weatherfreak wrote:
Found out what was causing all my problems.... Firefox!!! The minute I brought IE out of mothballs and fired it up, the upgrade files were accepted. Confused Rolling Eyes

Found it in an obscure post somewhere not to use Firefox with some other brand router.


Yes, it's in the hardware specific notes for this router as well.


Well I tried with Firefox 3.07 on Windows 2K and it didn't work but IE 6 did. Confused Weird.
Rolling Eyes
Skydiver
DD-WRT User


Joined: 23 Feb 2009
Posts: 298
Location: Germany

PostPosted: Sat Mar 14, 2009 9:06    Post subject: Re: Dang thing!! Reply with quote
weatherfreak wrote:
sparkie wrote:
weatherfreak wrote:
Found out what was causing all my problems.... Firefox!!! The minute I brought IE out of mothballs and fired it up, the upgrade files were accepted. Confused Rolling Eyes

Found it in an obscure post somewhere not to use Firefox with some other brand router.


Yes, it's in the hardware specific notes for this router as well.


Well I tried with Firefox 3.07 on Windows 2K and it didn't work but IE 6 did. Confused Weird.
Rolling Eyes


Yep, Netgears stockfirmware has a problem with Firefox, error message will popup...
Its a Firmwarebug Smile.
But with DDWRT installed already Firefox works for me...
dctechie
DD-WRT Novice


Joined: 14 Mar 2009
Posts: 6

PostPosted: Sat Mar 14, 2009 15:21    Post subject: Power Always Blinking now. Reply with quote
Great instructions. Only thing now is it seems like my router permanently has pins 16 and 17 bridged. TFTP was successful. on restart it goes right into Power blinking rapidly. Was there something special to do after TFTP? Should it only take 5 seconds for 3.5MB?

Thanks!


Vamp wrote:
208 wrote:
Tried to debrick mine. After flashing custom section still could not ping router. I flashed the cfe backup and now all the led's are lit up except the power led. jtag says flash chip is not recognized. Any suggestions?


I had my wnr834b_v2 bricked.
What i did:
1. open a router
2. open a window and start ping -t 192.168.1.1
3. open another window and prepare tftp comand ( you have to use netgear .bin file. don't use dd-wrt it will not work).
4. use a small screwdriver to short pin 16 to 17 on the mx flash chip.
5. plug the power. You will see the power light blinking. when this, take off the screwdriver. You will see a constant ttl-100.
6. Start tftp
After that if you want to use ww-wrt firmware, use first the .chk, because you router is back to original netgear firmware.
Works for me and now i have my router alive and running ww-wrt
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