Please help unbrick my E3000 and E2000

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matus12345
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Joined: 20 Jan 2011
Posts: 20

PostPosted: Mon Jan 23, 2012 12:36    Post subject: e2000 Reply with quote
Hello barryware!
If i have CA-42 and it need power about 3V on its pin for working, which pins i should connect to serial in wan port? Is enough connect only TX/RX pins? And btw can i flash BrainSlayers 18024 big? because i think most peoples flash old versions of firmwares what do you recommend? Thanks for answers.
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enterco
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Joined: 28 Mar 2012
Posts: 3

PostPosted: Wed Mar 28, 2012 16:17    Post subject: Reply with quote
I have a Linksys E2000, which looks like bricked, after a failed update attempt from dd-wrt.v24-14929_NEWD-2_K2.6_std_usb_ftp-e2000.bin to dd-wrt.v24-17990_NEWD-2_K2.6_mega.bin.
Now, the router keeps blinking the power LED and the LAN ports are working.
If I set the IP address on my computer manually and start pinging to 192.168.1.1, i see a single reply out of ~15 reboots, even with the ARP address entered manually.
I tried to put the default firmware with tftp, but the TFTP client times out.

Can anyone tell me what should I do next, before attempting to recover with a serial cable ?
wats6831
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Joined: 20 Apr 2010
Posts: 205

PostPosted: Wed Mar 28, 2012 21:48    Post subject: Reply with quote
Read the peacock thread and follow step 6 to the letter.
enterco
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Joined: 28 Mar 2012
Posts: 3

PostPosted: Tue Apr 03, 2012 9:38    Post subject: Reply with quote
I couldn't manage to fix the router using the guide starting at step 6.
It worked this way:
I bought an FTDI USB TTL Serial cable with 3.3v TTL signalling. I used the model TTL-232R-3V3-WE, but it should work with those models too: TTL-232RG-VREG3V3-WE, TTL-232RG-VSW3V3-WE)

I connected the console as described in this thread

On the PC i used 192.168.1.2 and I had prepared the original firmware, named e2000_mfg.bin. I prepared the TFTP put command line, because there is a small time window to upload the firmware.

I booted the router, stopped the loader with Ctrl+C, I've sent a
Code:
ping 192.168.1.2
to eliminate a potential wait time for the TFTP client, and then I issued this command on the router:
flash -ctheader : flash1.trx
This works better than the command described in other thread
flash -ctheader -mem -size=0x531400 0x807a60b0 flash1.trx
because E2000 seems to not like the -mem switch.

I had to start the TFTP upload command
Code:
TFTP -i 192.168.1.1 PUT e2000_mfg.bin

immediately after issuing the above
Code:
flash -ctheader : flash1.trx
on router's console.
Murrkf
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Joined: 22 Sep 2008
Posts: 12675

PostPosted: Tue Apr 03, 2012 11:37    Post subject: Reply with quote
If you had followed the peacock announcement, you would have been using the serial recovery information from the wiki, which would have worked....

No where does it say to use the procedures in "Serial Port in the Wan Port" thread.

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wats6831
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Joined: 20 Apr 2010
Posts: 205

PostPosted: Tue Apr 03, 2012 14:42    Post subject: Reply with quote
Can the OP post some pictures of this serial inside the WAN port non-sense with the whatever USB to TTL cable?

I've only seen and done it the way Barryware has described by soldering to the pads on the PCB. It takes like 30 secs to open the case...
evrycard
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Joined: 09 Mar 2011
Posts: 152

PostPosted: Thu May 31, 2012 23:13    Post subject: Reply with quote
Bricked! flashing with the wrong firmware.
E3000.. only power light is blinking.
I have tried the serial recovery with no help.
USB cable is at COM4.
Putty is COM4 - 115200 - 8 - 1 - none - none.
Start Putty.
Power router on.
2 symbols comes up and stops there.
Cables on the pictures are:
Black = Grn
White = Rx
Gray = Tx
Any idea what I have missed?
barryware
DD-WRT Guru


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

PostPosted: Thu May 31, 2012 23:35    Post subject: Reply with quote
evrycard wrote:
Bricked! flashing with the wrong firmware.
E3000.. only power light is blinking.
I have tried the serial recovery with no help.
USB cable is at COM4.
Putty is COM4 - 115200 - 8 - 1 - none - none.
Start Putty.
Power router on.
2 symbols comes up and stops there.
Cables on the pictures are:
Black = Grn
White = Rx
Gray = Tx
Any idea what I have missed?

Man... Depending on what was on the router, and what you flashed, serial will not work unless you erase nvram via jtag. And once you do, you can not let the router boot again without stopping the boot via serial, or you have to do it all over again.

jtag is a challenge on the 3000 (and the 610v2) because linksys has disabled the circuit.

If you are in the US, I will give it a lash.. (never done it before, but have seen it on tv Razz )

PM if you wish..

EDIT: looking at your pic..

It looks like I have worked on that router (that is the way I mark the pcb.. I can't remember all the users / routers I fix). Is there a jtag header installed.. If so, I enabled the jtag port.

Butt Razz You may also want to connect the vcc (3.3v). Not sure exactly how your adapter works. It may need vcc connected. You might want to switch tx & rx.. I have an adapter that is marked tx, but it is really rx (meaning, the adapter was telling me what to connect to.. get it?)

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evrycard
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Joined: 09 Mar 2011
Posts: 152

PostPosted: Fri Jun 01, 2012 0:29    Post subject: Reply with quote
Barry... You got PM. Very Happy
evrycard
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Joined: 09 Mar 2011
Posts: 152

PostPosted: Fri Jun 01, 2012 18:46    Post subject: Reply with quote
How the heck do I JTAG it? I can't any info. Evil or Very Mad
Maybe time to send it to your Barry. Laughing
barryware
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Joined: 26 Jan 2008
Posts: 13049
Location: Behind The Reset Button

PostPosted: Fri Jun 01, 2012 18:50    Post subject: Reply with quote
evrycard wrote:
How the heck do I JTAG it? I can't any info. Evil or Very Mad
Maybe time to send it to your Barry. Laughing

No problem..

There should be a dd-wrt fine though for anybody that bricks the same router more than once Razz

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Murrkf
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Joined: 22 Sep 2008
Posts: 12675

PostPosted: Fri Jun 01, 2012 19:12    Post subject: Reply with quote
evrycard wrote:
How the heck do I JTAG it? I can't any info. Evil or Very Mad


Did someone delete those announcements at the top of this forum?

_________________
SIG:
I'm trying to teach you to fish, not give you a fish. If you just want a fish, wait for a fisherman who hands them out. I'm more of a fishing instructor.
LOM: "If you show that you have not bothered to read the forum announcements or to follow the advices in them then the level of help available for you will drop substantially, also known as Murrkf's law.."
barryware
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Joined: 26 Jan 2008
Posts: 13049
Location: Behind The Reset Button

PostPosted: Fri Jun 01, 2012 19:33    Post subject: Reply with quote
Murrkf wrote:
evrycard wrote:
How the heck do I JTAG it? I can't any info. Evil or Very Mad


Did someone delete those announcements at the top of this forum?

MyBad.. Smile

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Murrkf
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Joined: 22 Sep 2008
Posts: 12675

PostPosted: Fri Jun 01, 2012 19:34    Post subject: Reply with quote
barryware wrote:
Murrkf wrote:
evrycard wrote:
How the heck do I JTAG it? I can't any info. Evil or Very Mad


Did someone delete those announcements at the top of this forum?

MyBad.. Smile


Put em back! Especially the peacock announcement. Note 6. The one with the links in it.... Wink

_________________
SIG:
I'm trying to teach you to fish, not give you a fish. If you just want a fish, wait for a fisherman who hands them out. I'm more of a fishing instructor.
LOM: "If you show that you have not bothered to read the forum announcements or to follow the advices in them then the level of help available for you will drop substantially, also known as Murrkf's law.."
barryware
DD-WRT Guru


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

PostPosted: Fri Jun 01, 2012 19:44    Post subject: Reply with quote
Murrkf wrote:
barryware wrote:
Murrkf wrote:
evrycard wrote:
How the heck do I JTAG it? I can't any info. Evil or Very Mad


Did someone delete those announcements at the top of this forum?

MyBad.. Smile


Put em back! Especially the peacock announcement. Note 6. The one with the links in it.... Wink

Kidding aside.. Any jtag operations I have preformed on the E3000 (610V2), have been with a wiggler. Not sure if an unbuffered cable will work.

I wuz working with T~ on this router as well as the E2000 (320), then both he & I got busy at the time.. Since, I (we), have not been back to it.

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