Problem while running TTL debricking process

10 posts / 0 new
Last post
Thu, 02/10/2011 - 6:27pm
#1
PhoenixFnX
PhoenixFnX's picture
Problem while running TTL debricking process

Hello everybody,

 

I bricked my router (Yes I'm sure of that and I tried a lot of things, including the famous 30-30-30)

 

I bought a TTL cable yesterday and followed the steps explained here to debrick the router.

The problem comes when I launch putty and then turn the router on : <b> There are a lots of unprintable characters on putty !!!</b> 
http://img152.imageshack.us/img152/5195/putty.png
<img src="http://img152.imageshack.us/img152/5195/putty.png">

 

I really need help this is making my nights like nightmares !!
Thanks in advance !

 

Nicolas

Top
Thu, 02/10/2011 - 6:27pm
Permalink
PhoenixFnX
PhoenixFnX's picture
http://img152.imageshack.us

http://img152.imageshack.us/img152/5195/putty.png

Top
Fri, 02/11/2011 - 6:00am
Permalink
Kong
Kong's picture
Make sure you set these

Make sure you set these values for your serial console in putty:

Speed: 115000
Data: Bits 8
Stop: Bits 1
Parity: None
Flow Control: None

Top
Fri, 02/11/2011 - 8:16am
Permalink
PhoenixFnX
PhoenixFnX's picture
I used 115200, is it wrong ?

I used 115200, is it wrong ? (not at home ATM)

I used :
Speed: 115200
Data: Bits 8
Stop: Bits 1
Parity: None
Flow Control: None

Is the scrambled text a misconfiguration symptom ???

Top
Fri, 02/11/2011 - 4:14pm
Permalink
Kong
Kong's picture
Sorry, it is suposed to be

Sorry, it is suposed to be 115200, the scrambled text means that your jtag serial setup is not correct

Top
Sat, 02/12/2011 - 11:25am
Permalink
PhoenixFnX
PhoenixFnX's picture
Kong said:  the scrambled

Kong said:  the scrambled text means that your jtag serial setup is not correct

Can you explain a bit more what is the jtag serial setup ?

Top
Sat, 02/12/2011 - 12:24pm
Permalink
Kong
Kong's picture
The TTL cable, connects to

The TTL cable, connects to the JTAG interface of the cpu via serial interface.
So if it is connected as specified-> pins are right and the serial console uses the correct settings there will be either no output or correct output. What TTL Adapter are you using?

These have been tested:

http://www.ftdichip.com/Products/Cables/USBTTLSerial.htm

Top
Sat, 02/12/2011 - 12:37pm
Permalink
PhoenixFnX
PhoenixFnX's picture
My cable is a FTDI TTL-232R

My cable is a FTDI TTL-232R-3v3

USB to TTL Serial cable (3.3v) - 1.8m

Do you have a piece of advice for me ?

Top
Sat, 02/12/2011 - 12:58pm
Permalink
PhoenixFnX
PhoenixFnX's picture
When I type text in the putty

When I type text in the putty window,

it shows caracters but not the ones I typed, it looks like I can speak with the CPU but not with the good language ......

Top
Sat, 02/12/2011 - 1:34pm
Permalink
PhoenixFnX
PhoenixFnX's picture
OOOOOOOOOOOOOOH MYYYYYYYYYYYY

OOOOOOOOOOOOOOH MYYYYYYYYYYYY GOOOOOOOOOOOOOOOD

I got it workin !!!!!!!!!!!!!

This comment helped me :

Here is what I did to get mine to work

-Downlaod the latest firmware from netgear and rename it to WNR3500.chk
-Save it on your C drive
-Open cmd
-Type "cd\" and hit "enter", this will move you to the C drive
-Type "tftp -i 192.168.1.1 PUT WNR3500.chk" DON'T PRESS "ENTER"
-Now plug in the power to your router while holding a screw driver in your hand
-wait until all lights flashes and then short the 2 pins shown in Fabian pic
-while having your screwdriver on the 2 pins, go to the cmd window and press"ENTER"
- wait until you get a confirmation that the file transferred sucessfuly==> Then my lights started blinking green==>
-Now put your screwdriver on the table and press the "upward" arrow and then press "enter" to send the firmware file a second time.

- The light color will change from blinking green to blinking orange... wait... wait... wait... wait 5 minutes and the router will be restored.

http://www.myopenrouter.com/article/13859/How-To-Debrick-Your-NETGEAR-WN...

Actually the key is to make the shortcut when all lights blink !!!

THANNNNNNNNNNNNNNNNNKS Everybody !!!!!

Top