Debriking RT-N16 - tjtag 3.0.2 can´t reed IMPCODE

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tripexio
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Joined: 11 Oct 2011
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PostPosted: Thu Nov 03, 2011 17:20    Post subject: Debriking RT-N16 - tjtag 3.0.2 can´t reed IMPCODE Reply with quote
hallo to the forum
I have problems with buffered JTAG debriking on asus rt-n16. I have tried with buffered and unbuffered Universal TIAO DB/25 interface and with home made resistor cable with no luck at all.
The problem as you can see on cd-prompt here below, is the EJTAG IPMCODE and VERSION that doesn´t appear to be correct!!
I working with a Asus MB, P4 2,4GHzcpu (ECP-DMA3-IRQ7 in BIOS).
The router seem to be bricked, the only second where WAN and LAN1-4 led only are on, is when switching router power on or when inserting activ ethernet cable
I´ll very much appreciate any kind of wise help on topic
After 2 weeks of hard testing, i´m now getting desperate.. i really hope there somebody in the forum that has experienced similar issue before, to possibly help me getting my smail back.. many thanks
Best regards



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Murrkf
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PostPosted: Thu Nov 03, 2011 17:42    Post subject: Reply with quote
Perhaps try a different version of tjtag. Note that the commands will be different with a different version.
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barryware
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Joined: 26 Jan 2008
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PostPosted: Thu Nov 03, 2011 17:57    Post subject: Reply with quote
that version of jtag defaults to /cable:wigggler..

leave that switch out of the command.

leave all switches out and just do a -probeonly and see what you come up with.

or just use serial.. depending on what you did to brick the router, you should only need to erase nvram and force the flash of good firmware. Both can be done with serial.

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tripexio
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Joined: 11 Oct 2011
Posts: 26

PostPosted: Thu Nov 03, 2011 20:25    Post subject: IPMCODE & Init PrAcc Reply with quote
Thx. for the very fast answering Very Happy
I really don´t know how my router died.. but i´m sure it was me doing something rong when playing with the router software Mad
Couple of weeks a go i did build a serial on Nokia DLR-3P cable, but even here no luck at all. I tried with both HyTerminal and Putty with right setup on COM-port, but i couldn´t get any prompt on the terminal window Confused

As you can see below, in -probeonly i get same result
The chip (broadcom BCM4716)it´s ok, but not the EJTAG IPMCode and Version..
The cd-prompt always freez on "init PrAcc" Exclamation
Best regards



Nokia DLR-3P (serial J2).gif
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Nokia DLR-3P (serial J2).gif



tjtag 3.0.2 -probeonly buffered.GIF
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tjtag 3.0.2 -probeonly buffered.GIF


barryware
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PostPosted: Thu Nov 03, 2011 20:32    Post subject: Reply with quote
I dunno.. I can't help.

I know Tornado has an RT and I have seen him about it the forums lately. Possibly he will see this thread and chime in.

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Tornado
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Joined: 07 Jun 2006
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Location: Odessa, Ukraine

PostPosted: Thu Nov 03, 2011 20:39    Post subject: IPMCODE & Init PrAcc Reply with quote
e-mail me tornado@tjtag.com, and I will try to help
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Tjtag website - http://tjtag.com

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barryware
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PostPosted: Thu Nov 03, 2011 20:41    Post subject: Reply with quote
lets do this in this thread Smile

(excluding blasting software back & forth)

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Tornado
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PostPosted: Thu Nov 03, 2011 20:43    Post subject: Software Reply with quote
Yes, I wanted to send him software via e-mail, also make sure nTRST and ground is connected, its not changing from 32 IR to 5 IR

no need for the all the other commands, just -probeonly

_________________
Want JTAG support - Donate a router
or Donate with PayPal !

My preferred parallel jtag adapter:
TIAO Parallel adapter

Tjtag website - http://tjtag.com

Compiling DD-WRT on:
AMD Phenom II X6 1090T @ 3926.667 Mhz

Aptosid X64 - Debian SID X64
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barryware
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Joined: 26 Jan 2008
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Location: Behind The Reset Button

PostPosted: Thu Nov 03, 2011 20:46    Post subject: Re: Software Reply with quote
Tornado wrote:
Yes, I wanted to send him software via e-mail, also make sure nTRST and ground is connected, its not changing from 32 IR to 5 IR

no need for the all the other commands, just -probeonly


See.. That is interesting. Smile

I didn't know nTRST was required. I have used buffered without it (prolly buffered is diff than a real wiggler)

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Tornado
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PostPosted: Thu Nov 03, 2011 20:49    Post subject: nTRST Reply with quote
Barry, you are probably right, I do not need it on the e1000v2. just trying to recall from memory. The e1000v2 also must change from 32 IR to 5 IR, I do have that one hooked up
_________________
Want JTAG support - Donate a router
or Donate with PayPal !

My preferred parallel jtag adapter:
TIAO Parallel adapter

Tjtag website - http://tjtag.com

Compiling DD-WRT on:
AMD Phenom II X6 1090T @ 3926.667 Mhz

Aptosid X64 - Debian SID X64
Ubuntu 10.10 X64 - Arch X64
tripexio
DD-WRT Novice


Joined: 11 Oct 2011
Posts: 26

PostPosted: Thu Nov 03, 2011 23:26    Post subject: Reply with quote
hi,
still no luck.. even with the new extension from Tornado
Is there more i can do to help??
Thx. to you all



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tjtag302 v2-3 -probeonly.GIF


Tornado
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Location: Odessa, Ukraine

PostPosted: Thu Nov 03, 2011 23:38    Post subject: IR length Reply with quote
It's very strange.... do you power off/on before issuing the command ? Don't know why its not picking up the initial IR length

Also, give it a sec or 2 when you turn it on, before sending the command

_________________
Want JTAG support - Donate a router
or Donate with PayPal !

My preferred parallel jtag adapter:
TIAO Parallel adapter

Tjtag website - http://tjtag.com

Compiling DD-WRT on:
AMD Phenom II X6 1090T @ 3926.667 Mhz

Aptosid X64 - Debian SID X64
Ubuntu 10.10 X64 - Arch X64
barryware
DD-WRT Guru


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

PostPosted: Thu Nov 03, 2011 23:42    Post subject: Re: IR length Reply with quote
Tornado wrote:
It's very strange.... do you power off/on before issuing the command ? Don't know why its not picking up the initial IR length


Yea.. you gotta get jtag ready to launch, power up and launch.. sometimes timing is the key.. 1/100'th of a second one way ot the other makes all the diff in the world..

jtag has to hit the processor before it starts processing.

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Tornado
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PostPosted: Thu Nov 03, 2011 23:47    Post subject: VCC Reply with quote
Also, tjtag says VCC connected, you don't have power to VCC do you ? this may need some work, the reading could be wrong
_________________
Want JTAG support - Donate a router
or Donate with PayPal !

My preferred parallel jtag adapter:
TIAO Parallel adapter

Tjtag website - http://tjtag.com

Compiling DD-WRT on:
AMD Phenom II X6 1090T @ 3926.667 Mhz

Aptosid X64 - Debian SID X64
Ubuntu 10.10 X64 - Arch X64
tripexio
DD-WRT Novice


Joined: 11 Oct 2011
Posts: 26

PostPosted: Fri Nov 04, 2011 0:03    Post subject: Reply with quote
I have tried for 2 weeks with many different timing on router power cycling with home made JTAG cable with same result as i´m getting now.. i´m getting mad on this Crying or Very sad
Ok.. i´ll give some try on power timing and i will let you know tomorrow
.. sorry but for me it is sune time to sleep Sad

Thanks you all Wink
Best regsrds
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