Author Topic: I need help to debrick my WZR-HP-G300NH, please  (Read 11657 times)

pshevtsov

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I need help to debrick my WZR-HP-G300NH, please
« on: January 22, 2012, 08:50:57 am »

Hello all!

I flashed new professional firmware 17798-alpha without a problem. But then I decided to revert back to friendly edition v1.79. But after I flash it from web interface - my router stops working. It flash 2 times by diag led, waits for 3 sec and then flash 2 times again and so on.

I found this post describing how to unbrick router. But this doesn't helps. I've tried to TFTP a lot of firmwares, but this didn't help. Maybe I'm trying not correct firmware to TFTP?

Router model: WZR-HP-G300NH,  A0 A1. SSID: 001D7390830B.

 

Can anyone tell me what to do to get my router back to life?

 

P.S.. Sorry for my english :)


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #1 on: January 22, 2012, 08:20:16 pm »

what operating system do you use? also i am going to assume this is a G300NH v1. if you use windows xp you can tftp like so..

 

Power the router off for now. Make sure you are wired into the switch.

 

1) Set a static ip on the pc of 192.168.11.2 / 255.255.255.0 Gateway: 192.168.11.1

 

2) Open a command prompt and type this: arp -s 192.168.11.1 02-AA-BB-CC-DD-1A [enter]

 

3) After entering the static arp have the command line ready with this command (and you'll have to be in the dir where the firmware image is at or it won't work): tftp -i 192.168.11.1 put wzrhpg300nh-pro-v24sp2-17798-alpha.enc

 

4) Do not enter the TFTP command, just having it waiting for now,  Plug in the power for the router and count to 10 seconds, then enter the TFTP command that you should have waiting in the command prompt.

 

5) You'll know if it transferred by the command prompt telling you so, give it about 5 minutes after is transfer was successful, it'll reset/program itself in this time. One it is complete the Red Diag LED should go off and then you can access it at 192.168.11.1

 


pshevtsov

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #2 on: January 24, 2012, 01:49:55 pm »

Thanks for answering.

I'm using Windows 7 Home Premium.

I did all that you write. But this didn't help.

TFTP wrote that transfer was successful. I waited for about 10 minutes, after TFTP command. But DIAG led still blinking 2 times.

Is it possible to see somekind a log of flashing proccess by TFTP command?


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #3 on: January 25, 2012, 08:13:54 pm »

Hrm, Win7? I don't even think it has a command line TFTP, you aren't using some kinda 3rd party application to do the TFTP transfer with, are you?


pshevtsov

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #4 on: January 26, 2012, 12:15:24 am »

TFTP exists in Win 7, you just need to install it by yourself, because TFTP (and telnet) program is optional.

I think the problem is in firmware file that I TFTPing in router...  

Is it possible to see logs of uboot? I can't find information for doing this :(


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #5 on: January 26, 2012, 09:07:44 am »

There is no log with uboot, the only way you can see uboot's output is if you have a serial connection to the router.


Robotix

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #6 on: February 13, 2012, 01:29:20 pm »

Buddee:

 

How do you put the firmware in the same directory in this command?  This is where I'm having problems, since it can not find the file and tells me it doesn't exist


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #7 on: February 13, 2012, 05:47:04 pm »

Put it in your main C:\

 

Then just command prompt from C:

 

The file should be in there then, once you are finished with the procedure, you can delete the file from C:\

 

 


Robotix

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #8 on: February 13, 2012, 07:27:12 pm »

Thanks for your reply Buddee

 

I finally could get to this file, but after getting to this step and connecting the plug back into the router, it gives me this message (IŽll translate it  from Spanish which is my native tongue). " WAITING TIME IS OVER" and doesnŽt transfer the file.

 

What in heaven am I doing wrong this time? 


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #9 on: February 14, 2012, 05:51:27 am »

Not sure what you are doing wrong. TFTP is very much about timing. So step 4 is very important.


Robotix

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #10 on: February 14, 2012, 08:06:39 am »

Well, in that case I guess I'll have to throw it away or use it as a door stop. I have tried everything from the Ubuntu method to this one and nothing has worked, I quit.

 

Thanks anyway


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #11 on: February 14, 2012, 06:28:39 pm »

Do you have a 10/100 switch that you can put in between the pc and router and then re-try? Sometimes it won't work without it because windows waits for the switch on the router to initialize, which can sometimes take to long and miss the tftp window.


Robotix

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #12 on: February 15, 2012, 04:51:52 am »

I do have a switch, but I don't know how to set it up, I mean I don't know where each cable should go to.

Could you tell me how?


buddee

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #13 on: February 15, 2012, 05:50:46 am »

Plug the switch in, then connect the PC to port 1 of the switch, then connect port 1 of the router's switch to port 2 of the switch, thats it.


Robotix

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Re: I need help to debrick my WZR-HP-G300NH, please
« Reply #14 on: February 15, 2012, 05:58:21 am »

Thanks buddy, I'll try it and let you know