Please help unbrick my E3000 and E2000

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p_shep
DD-WRT User


Joined: 14 Mar 2011
Posts: 51

PostPosted: Thu Nov 29, 2012 1:06    Post subject: Reply with quote
Just ordered this, should do the job:

http://www.amazon.com/gp/product/B006JKNWLE/ref=oh_details_o00_s00_i00

(I like that the user picture shows someone de-bricking a router Very Happy)

And it's shipped already!
Sponsor
buddee
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Joined: 06 Feb 2010
Posts: 7401
Location: Little Rock

PostPosted: Thu Nov 29, 2012 1:44    Post subject: Reply with quote
Excellent, looks good. ca-42 clones was always just easier for me, an i like the longer cable that comes with ca-42 clones, but whatever works. Here is a pic of the pinouts for reference.


serial_pinouts_e3k-2.jpg
 Description:
E2000/E3000 pinout reference
 Filesize:  81.51 KB
 Viewed:  20255 Time(s)

serial_pinouts_e3k-2.jpg



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p_shep
DD-WRT User


Joined: 14 Mar 2011
Posts: 51

PostPosted: Wed Dec 05, 2012 2:37    Post subject: Reply with quote
Something's gone wrong. Not getting anything ineligible out of the port...
First tried the ribbon cable trick to no avail, then took it apart and soldered onto the internal pads.
Turn it on and I get a random character. Settings are 115K2 8N1.
Dead router Sad
Murrkf
DD-WRT Guru


Joined: 22 Sep 2008
Posts: 12675

PostPosted: Wed Dec 05, 2012 3:52    Post subject: Reply with quote
Those pads have a protective finish on them. You have to get through that finish to the pads. If you soldered them, you should be through. Check continuity. Serial recovery wiki has good info.
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barryware
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Joined: 26 Jan 2008
Posts: 13049
Location: Behind The Reset Button

PostPosted: Wed Dec 05, 2012 13:50    Post subject: Reply with quote
p_shep wrote:
Something's gone wrong. Not getting anything ineligible out of the port...
First tried the ribbon cable trick to no avail, then took it apart and soldered onto the internal pads.
Turn it on and I get a random character. Settings are 115K2 8N1.
Dead router Sad

Some (not all) usb ttl converts need vcc connected.. Some only tx, rx, and ground.

remove the tx & rx wires from the router and twist them together. Now see if your typed characters are echo'd correctly in your terminal.

also check your com parameters. Depending on the hardware & driver, you may have to set the parameters in the device manager as well as your terminal software.

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soundsticks
DD-WRT Novice


Joined: 21 Feb 2013
Posts: 5

PostPosted: Fri Mar 01, 2013 8:35    Post subject: Reply with quote
I see that the post mention restore stock firmware is *.trx but I see most of the firmware is come with *.bin. Is the bin file compatible?
nirvanaguy19
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Joined: 11 Aug 2008
Posts: 4

PostPosted: Mon Jul 08, 2013 11:04    Post subject: Reply with quote
I have a e2000 bricked. I got a ca-42 cable and soldered it to the serial port. After many attempts I am able to stop cfe boot sequence, but any command i type on screen is being showed as garbage. I am able to see all the written contents on the screen properly, just anything i type is being show as garbage. My ca-42 cable came with 3 wires. I simply connected rx,tx and ground as shown in the serial recovery wiki. There is no connection to 3.3v pin
buddee
DD-WRT Guru


Joined: 06 Feb 2010
Posts: 7401
Location: Little Rock

PostPosted: Mon Jul 08, 2013 11:22    Post subject: Reply with quote
nirvanaguy19 wrote:
I have a e2000 bricked. I got a ca-42 cable and soldered it to the serial port. After many attempts I am able to stop cfe boot sequence, but any command i type on screen is being showed as garbage. I am able to see all the written contents on the screen properly, just anything i type is being show as garbage. My ca-42 cable came with 3 wires. I simply connected rx,tx and ground as shown in the serial recovery wiki. There is no connection to 3.3v pin


You most likely hooked up the cable wrong, most times when you get rubbish output it is from having the Tx/Rx reversed.

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Murrkf
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Joined: 22 Sep 2008
Posts: 12675

PostPosted: Mon Jul 08, 2013 14:46    Post subject: Reply with quote
buddee wrote:
nirvanaguy19 wrote:
I have a e2000 bricked. I got a ca-42 cable and soldered it to the serial port. After many attempts I am able to stop cfe boot sequence, but any command i type on screen is being showed as garbage. I am able to see all the written contents on the screen properly, just anything i type is being show as garbage. My ca-42 cable came with 3 wires. I simply connected rx,tx and ground as shown in the serial recovery wiki. There is no connection to 3.3v pin


You most likely hooked up the cable wrong, most times when you get rubbish output it is from having the Tx/Rx reversed.


Or a bad ground...

_________________
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.."
nirvanaguy19
DD-WRT Novice


Joined: 11 Aug 2008
Posts: 4

PostPosted: Tue Jul 09, 2013 7:58    Post subject: Reply with quote
buddee wrote:
nirvanaguy19 wrote:
I have a e2000 bricked. I got a ca-42 cable and soldered it to the serial port. After many attempts I am able to stop cfe boot sequence, but any command i type on screen is being showed as garbage. I am able to see all the written contents on the screen properly, just anything i type is being show as garbage. My ca-42 cable came with 3 wires. I simply connected rx,tx and ground as shown in the serial recovery wiki. There is no connection to 3.3v pin


You most likely hooked up the cable wrong, most times when you get rubbish output it is from having the Tx/Rx reversed.


if rx/tx were reversed would i still see the boot sequence on the serial connection. all the CFE boot sequence text is being shown perfectly, only the commands i type are being shown incorrectly
buddee
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Joined: 06 Feb 2010
Posts: 7401
Location: Little Rock

PostPosted: Tue Jul 09, 2013 10:22    Post subject: Reply with quote
Just need to make sure your cable is hooked up properly, and then if you can CTRL-C and break the CFE boot, your commands at the CFE shell should then be fine.
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fityla
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Joined: 07 Jan 2011
Posts: 16
Location: Bulgaria

PostPosted: Wed Sep 11, 2013 10:45    Post subject: Reply with quote
Hello, i bricked E3000. On serial port output.
Not working Ctrl + C, where is problem? I connecting router and pc with usb to uart. I connect TX, RX and GND.

CFE version 1.0.37 for BCM947XX (32bit,SP,LE)
Build Date: Thu Oct 21 12:10:06 CST 2010 (lzh@team2-complier)
Copyright (C) 2000-2008 Broadcom Corporation.

Init Arena
Init Devs.

No DPN
This is a Parallel Flash
Boot partition size = 262144(0x40000)
CPU type 0x19740: 480MHz
Tot mem: 65536 KBytes

CFE mem: 0x80700000 - 0x8079DAC0 (645824)
Data: 0x80732A20 - 0x80737080 (18016)
BSS: 0x80737080 - 0x80737AC0 (2624)
Heap: 0x80737AC0 - 0x8079BAC0 (409600)
Stack: 0x8079BAC0 - 0x8079DAC0 (8192)
Text: 0x80700000 - 0x80732A1C (207388)

Boot version: v4.2
The boot is CFE

mac_init(): Find mac [XX:XX:XX:XX:XX:XX] in location 0
Nothing...
country_init(): Find country code in location 0
The country is same
**Exception 8: EPC=80715648, Cause=80008008 (TLBMissRd)
RA=80715650, VAddr=0000000C

0 ($00) = 00000000 AT ($01) = 80730000
v0 ($02) = 00000000 v1 ($03) = 00000000
a0 ($04) = 80738C80 a1 ($05) = 8072CAB9
a2 ($06) = 00000001 a3 ($07) = 00000003
t0 ($0Cool = 00000000 t1 ($09) = 00000000
t2 ($10) = 807322B0 t3 ($11) = 00000000
t4 ($12) = 6A26162A t5 ($13) = 48534C46
t6 ($14) = 9FC036BC t7 ($15) = FBDBF97B
s0 ($16) = 00000000 s1 ($17) = 00000000
s2 ($1Cool = 8072CA8C s3 ($19) = 8072CA68
s4 ($20) = 8079D880 s5 ($21) = 8079D880
s6 ($22) = 00004716 s7 ($23) = 00000001
t8 ($24) = 04000000 t9 ($25) = 00000000
k0 ($26) = FFFFFFFF k1 ($27) = FFFFFFFF
gp ($2Cool = 8073AA20 sp ($29) = 8079D858

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Murrkf
DD-WRT Guru


Joined: 22 Sep 2008
Posts: 12675

PostPosted: Wed Sep 11, 2013 15:40    Post subject: Reply with quote
You have to hit ctrl-c EXTREMELY fast. Either you are not being fast enough or your connection to the router is not correct. Check to see if you can echo commands if you connect tx and rx.
_________________
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.."
fityla
DD-WRT Novice


Joined: 07 Jan 2011
Posts: 16
Location: Bulgaria

PostPosted: Tue Jan 07, 2014 15:38    Post subject: Reply with quote
Hello, i bricked E3000. On serial port output.
Not working Ctrl + C, where is problem? I connecting router and pc with usb to uart. I connect TX, RX and GND.

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Simba7
DD-WRT User


Joined: 09 Oct 2007
Posts: 51

PostPosted: Sun Jan 19, 2014 7:53    Post subject: Bricked my E2000 (somehow) Reply with quote
I went to update the firmware to the latest dd-wrt and it ran into a boot-loop. I then proceeded to flash it via serial and everything went fine, until it rebooted. Now serial's dead and all I have is a flashing power light and nothing else.

This is the first time this has happened to me. I've flashed countless routers to dd-wrt without issues. So, why is this one so darn picky?
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