TJTAG - EJTAG De-Brick tool - IMPORTANT CHANGE:See 1st Post.

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Eaglesoft69
DD-WRT Novice


Joined: 29 Sep 2008
Posts: 4

PostPosted: Tue Jan 11, 2011 2:02    Post subject: Re: Linksys WRT54GS v7 Bricked ? Reply with quote
.....
barryware wrote:
Eaglesoft69 wrote:
Ok ... So I have a WRT54GS Version 7 I attempted to flash with the DD-WRT firmware close to 18 months ago and I apparently Bricked it and after trying to EJtag it with a Buffered Jtag and not getting it to revive I placed it to the wayside thinking that I would tackle it at a later date. Well that later date has arrived as I came across it last night while cleaning up some of my cluttered Junk. What I am wondering is within the past 18mo if any progress has been made with software that would help me to un-brick this? All I get is Solid lights where the Port Light are located. If anyone can shed some light on this or maybe if one of the Gurus would like this Challenge I would be interested to hear from them

Eaglesoft69


If you are having a problem with GS V7, it is not the fault of the jtag software. tjtag 2.1.4 & earlier supported the GS v7


Thanks for replying Barry .... I did some research in this forum and found that I posted back in Sept. 2008 ( Still shaking my Head that I left this dormant for over 2 years ) and using the 2.1.4 Software I got the same result. Here is what I am getting .......

Tjtag -probeonly /noemw

========================================
EJTAG Debrick Utility v2.1.4-Tornado-MOD
========================================

Probing bus ... Done

Instruction Length set to 8

CPU Chip ID: 00100101001101010100000101111111 (2535417F)
*** Found a Broadcom BCM5354 KFBG Rev 2 CPU chip ***

- EJTAG IMPCODE ....... : 00000000100000010000100100000100 (00810904)
- EJTAG Version ....... : 1 or 2.0
- EJTAG DMA Support ... : Yes
- EJTAG Implementation flags: R4k MIPS16 MIPS32

Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Skipped
Halting Processor ... <Processor Entered Debug Mode!> ... Done
Clearing Watchdog ... Done

Probing Flash at (Flash Window: 0x1fc00000) ... Done

Flash Vendor ID: 00000000000000000000000010001001 (00000089)
Flash Device ID: 00000000000000001000100011000011 (000088C3)
*** Found a Intel 28F160C3 1Mx16 BotB (2MB) Flash Chip ***

- Flash Chip Window Start .... : 1fc00000
- Flash Chip Window Length ... : 00200000
- Selected Area Start ........ : 00000000
- Selected Area Length ....... : 00000000

*** REQUESTED OPERATION IS COMPLETE ***

I am not a novice of Flashing for I have done it for FTA's and Desktop Receivers ... I believe the Bootstrap is corrupted but just a thought ....

Eaglesoft69
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barryware
DD-WRT Guru


Joined: 26 Jan 2008
Posts: 13049
Location: Behind The Reset Button

PostPosted: Tue Jan 11, 2011 2:55    Post subject: Reply with quote
I don't see the problem.. processor as well as the flash chip is being recognized.

erase wholeflash (twice), flash a cfe.. done.. then tftp a micro build to the unit.

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Eaglesoft69
DD-WRT Novice


Joined: 29 Sep 2008
Posts: 4

PostPosted: Sun Jan 16, 2011 17:01    Post subject: Re: Linksys WRT54GS v7 Bricked ? Reply with quote
Barryware ....... I have tried for the past 6 days to get this 54GS flash to program with it stopping at 13%. I have Erased the Flash 2 - 5 times each and every time I have tried to flash it with just a CFE. Now it goes real fast in the programming until I hit 4% then it slows to a snails pace. I have tried straight up Parallel to ECP with DMA on and Off but same result. Since this is a *** Found a Intel 28F160C3 1Mx16 BotB (2MB) Flash Chip *** I have even tried tjtagv2 -flash:cfe /fc:48 but get same results. Also have made sure the Processor Entered Debug Mode! I am at a loss here thinking that maybe the Flash is Hosed. Would like your opinion on this ... Thanks
barryware
DD-WRT Guru


Joined: 26 Jan 2008
Posts: 13049
Location: Behind The Reset Button

PostPosted: Sun Jan 16, 2011 17:12    Post subject: Re: Linksys WRT54GS v7 Bricked ? Reply with quote
Eaglesoft69 wrote:
Barryware ....... I have tried for the past 6 days to get this 54GS flash to program with it stopping at 13%. I have Erased the Flash 2 - 5 times each and every time I have tried to flash it with just a CFE. Now it goes real fast in the programming until I hit 4% then it slows to a snails pace. I have tried straight up Parallel to ECP with DMA on and Off but same result. Since this is a *** Found a Intel 28F160C3 1Mx16 BotB (2MB) Flash Chip *** I have even tried tjtagv2 -flash:cfe /fc:48 but get same results. Also have made sure the Processor Entered Debug Mode! I am at a loss here thinking that maybe the Flash is Hosed. Would like your opinion on this ... Thanks


If it stops at the EXACT same spot every time, you have a bad flash chip

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moto
DD-WRT Novice


Joined: 29 Sep 2010
Posts: 7

PostPosted: Thu Jan 27, 2011 19:56    Post subject: Reply with quote
I'm looking for some guidance. I have several wrt54g2 v1.5 routers that have issues. I know they don't support dd-wrt, but i would like to try to fix them via jtag if possible. I have the header installed and i have the cable, but i cannot get the program to pick up the chip. AR-7240. If someone can point me in the right direction i would be forever greatfull.

Thanks,
M0t0
Dark_Shadow
DD-WRT Guru


Joined: 31 Aug 2009
Posts: 2450
Location: Third Rock from the Sun

PostPosted: Thu Jan 27, 2011 22:57    Post subject: Reply with quote
moto wrote:
I'm looking for some guidance. I have several wrt54g2 v1.5 routers that have issues. I know they don't support dd-wrt, but i would like to try to fix them via jtag if possible. I have the header installed and i have the cable, but i cannot get the program to pick up the chip. AR-7240. If someone can point me in the right direction i would be forever greatfull.

Thanks,
M0t0
Tornado would need one of the devices donated to code TJTAG to it.
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moto
DD-WRT Novice


Joined: 29 Sep 2010
Posts: 7

PostPosted: Fri Jan 28, 2011 9:16    Post subject: Reply with quote
Thanks for the reply, it's much appreciated. If that will work for tornado, i would be more than willing to send one. Just let me know.

Thanks,
M0t0
fulmine500
DD-WRT Novice


Joined: 23 Feb 2011
Posts: 1

PostPosted: Wed Feb 23, 2011 16:38    Post subject: Reply with quote
hello tornado.
I am new to this forum and I have a question for you. : D

Could you published the source code of tjtag 301 and / or 302-bit RC2 for Windows 64 without having to use the driver giveio?

Because I have a motherboard with a PCI LPT (not address 0x378) and I can not use.
If it were possible to have the source code for the 32bit version too without using a driver giveio would be great, as well as for Linux.

Thanks

and I apologize for having started with the requests just joined.
bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Wed Mar 02, 2011 5:14    Post subject: Reply with quote
hello, all,

i have a router here with a "loop" issue????

wrt54g v2.0 broadcom bcm4712 rev. 1 "cpu"
intel 28f3203c bot b (4mb) "flash"

here is what happened to start the "brick" ?
first i got router and "ya" then right away uploaded mini dd-wrt and viola!! sweet,, then upgraded to std, still working all good,,,, set up client bridge tested working,,, setup repeater bridge tested working,, awsome i was thrilled,,,, so i started tweeking things,, i no BAD idea!!! ,,,, anyway i turned up the power a little from 70 to 200 (it has a max of 251) tested working,,,, adjusted the cpu freq from 200 to 251,, tested FAILED "bricked" (this cpu has a max of 250),,, didnt see that until after i bricked it,,,

then i read alot,, i mean alot and built a jtag with 4 100 ohm resistors and it works like a jewel,, i can erase flash backup from the jtag with NO errors,, i can get a ping from all lan ports ,,,, i can NOT however tftp anything to it,,, i have tried all of 50 or so different combinations of cfe,nvram,and kernel packages and they all seem to flash with sucess except for the power light is still always blinking and it never lets me in to the gui

after all of that i decided to use this router to learn from and i have bought two more routers a wrt54gs and a wrt54g v2.2 i already have a wrt54g2 v1.5 sitting on the shelf and i might be willing to ship the wrt54g2 v1.5 to ya for your experimentation it still has the factory software and works perfect, i dont want to even try to tackle dd-wrt on the wrt54g2 v1.5 way to complicated,, the wrt54gs and wrt54g v2.2 are on there way "in shipping" and i will inform the group of what happens with them when they arive

thanks for any help in advance,
frog
bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Wed Mar 02, 2011 5:38    Post subject: Reply with quote
i also noticed that when i run a probe everything works down to after it has found the flash chip and then it doesnt look right,,,

*** Found a Intel 28F320c3 2Mx16 BotB (4MB) Flash Chip***

- Flash Chip Window Start .... : 1fc00000
- Flash Chip Window Length ... : 00400000

- Selected Area Start ........ : 00000000
- Selected Area Length ....... : 00000000



*** REQUESTED OPERATION IS COMPLETE ***

i will attach a copy of the current cfe and the nvram and the kernel for easier diagnosis,,



kernel.bin
 Description:
current kernel v2.0 dd wrt mini 1.7 m

Download
 Filename:  kernel.bin
 Filesize:  1.69 MB
 Downloaded:  829 Time(s)


nvram.bin
 Description:
current nvram v2.0

Download
 Filename:  nvram.bin
 Filesize:  19.99 KB
 Downloaded:  840 Time(s)


cfe.bin
 Description:
current cfe v2.0

Download
 Filename:  cfe.bin
 Filesize:  255.99 KB
 Downloaded:  855 Time(s)

bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Thu Mar 03, 2011 2:44    Post subject: Reply with quote
hey guy's,

i got some good news,,,, i found my problem,,, there were a couple of botched pins on the flash chip from trying the pin 16 jump out method (witch did NOT work),,,

i got some bad news,,, in a futile attempt at straightening the pins out i broke off pin 17 and now the flash rom stops at 4% always,, erase, flash, and backup ,,,,

now i believe this is truly a "BRICK",,, unless i can find a flash chip for less $$ cuz i can buy another router for the cost of that chip,,

as a side note: after studying the data sheet for the flash rom i noticed that with this particular chip it can be a 4, 8, 16, or 32 mb by pulling one of 4 possible pins high,, so does that mean that one could in theory,, pull the proper pin high and the others low to get the desired size?? as the chip itself is a 32m and it is blocked out down to the factory 4mb through pulling the 4mb pin high..

maybe someone out there needs a wrt54g v2.0 with a faulty flash rom for parts? it has 2 16m ram chips also (ic42s16400-6t),, i believe it is a gs board in a g setup.. the firmware when it was working claimed it was only 4mb flash and only 16mb ram ???????

later, frog
bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Thu Mar 03, 2011 20:36    Post subject: Reply with quote
cisco firmware first wrt54gs v7.0


KERNEL.BIN
 Description:
cisco kernel v7

Download
 Filename:  KERNEL.BIN
 Filesize:  1.69 MB
 Downloaded:  748 Time(s)


CFE.BIN
 Description:
cisco cfe v7

Download
 Filename:  CFE.BIN
 Filesize:  256 KB
 Downloaded:  670 Time(s)


BSP.BIN
 Description:
cisco bsp v7

Download
 Filename:  BSP.BIN
 Filesize:  320 KB
 Downloaded:  762 Time(s)

bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Thu Mar 03, 2011 20:38    Post subject: Reply with quote
the rest of the cisco firmware wrt54gs v7


WHOLEFLASH.BIN
 Description:
cisco wholeflash v7

Download
 Filename:  WHOLEFLASH.BIN
 Filesize:  2 MB
 Downloaded:  572 Time(s)


NVRAM.BIN
 Description:
cisco nvram v7

Download
 Filename:  NVRAM.BIN
 Filesize:  64 KB
 Downloaded:  726 Time(s)

bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Thu Mar 03, 2011 20:42    Post subject: Reply with quote
the dd-wrt firmware wrt54gs v7


KERNEL.BIN
 Description:
dd-wrt kernel v7 micro

Download
 Filename:  KERNEL.BIN
 Filesize:  1.69 MB
 Downloaded:  689 Time(s)


CFE.BIN
 Description:
dd-wrt cfe wrt54gs v7 micro

Download
 Filename:  CFE.BIN
 Filesize:  256 KB
 Downloaded:  802 Time(s)


BSP.BIN
 Description:
dd-wrt bsp v7 micro

Download
 Filename:  BSP.BIN
 Filesize:  320 KB
 Downloaded:  537 Time(s)

bullfrog13x4
DD-WRT Novice


Joined: 01 Nov 2010
Posts: 15

PostPosted: Thu Mar 03, 2011 20:44    Post subject: Reply with quote
the rest of the dd-wrt firmware wrt54gs v7


WHOLEFLASH.BIN
 Description:
dd-wrt wholeflash v7 micro

Download
 Filename:  WHOLEFLASH.BIN
 Filesize:  2 MB
 Downloaded:  730 Time(s)


NVRAM.BIN
 Description:
dd-wrt nvram v7 micro

Download
 Filename:  NVRAM.BIN
 Filesize:  64 KB
 Downloaded:  742 Time(s)

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