Need help for RT-N12C1 bricked

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firewall1
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Joined: 08 Apr 2011
Posts: 13

PostPosted: Fri Feb 23, 2018 7:23    Post subject: Need help for RT-N12C1 bricked Reply with quote
Hi

I have RT-N12C1 totaly bricked after a fail update to dd-wrt.Right now i loose totaly acess to the router , no ip , no cfe , all led light on and nothing appends.
The router no boot anymore. I try to plug Jtag serial , nothing happends too.
I think the CFE or NVRAM are maybe corrupted.
Please let me know if someone have a solution.
Cannot send TFTP too because the router no have any ip.

Thank you all for your help

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Malachi
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Joined: 17 Jul 2012
Posts: 7057
Location: Columbus, Ohio

PostPosted: Fri Feb 23, 2018 9:59    Post subject: Reply with quote
Smaller picture please. If you aren't getting any output from serial and are sure you have set it up correctly, then most likely it's trash.
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firewall1
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Joined: 08 Apr 2011
Posts: 13

PostPosted: Fri Feb 23, 2018 10:53    Post subject: Reply with quote
yes all is correct i have the pinout and i have check the 3.3v and gnd before to plug anything, and cross tx and rx.But not boot anymore Crying or Very sad


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jxm
DD-WRT Guru


Joined: 23 Jul 2017
Posts: 661
Location: Brisbane, Australia

PostPosted: Fri Feb 23, 2018 13:47    Post subject: Reply with quote
If you are not seeing any output, make sure you try swapping the Tx and Rx connections, even if you are sure you have them connected properly. I have found some illustrations on the Openwrt site that have the Tx and Rx swapped.... the labels were showing which cables to connect to the pins. If you take the illistration to be the function of the pins and cross over your Tx and Rx lines, it won't work. The vcc and ground labels will be ok though.

Cheers
jwh7
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Joined: 25 Oct 2013
Posts: 2186
Location: Indy

PostPosted: Fri Feb 23, 2018 16:15    Post subject: Re: Need help for RT-N12C1 bricked Reply with quote
firewall1 wrote:
I have RT-N12C1 totaly bricked after a fail update to dd-wrt.Right now i loose totaly acess to the router , no ip , no cfe , all led light on and nothing appends.
The router no boot anymore. I try to plug Jtag serial , nothing happends too.
I think the CFE or NVRAM are maybe corrupted.
What exactly did you do to brick it, and what exactly did you do to try fixing it so far? I.e. what guide are you following, etc. JTAG and serial are two different methods.
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firewall1
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Joined: 08 Apr 2011
Posts: 13

PostPosted: Sun Feb 25, 2018 10:16    Post subject: Reply with quote
I try to reset,i try 30/30/30 , i try TFTP, ssh , telnet , i try to plug CP2102 USB-Serial Converter Type-A to the serial nothing too.
All led light on and no more.



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firewall1
DD-WRT Novice


Joined: 08 Apr 2011
Posts: 13

PostPosted: Mon Mar 19, 2018 8:25    Post subject: Reply with quote
Anyone have a dump of RT-N12C1 CFE ? Or bootloader ? and Jtag pinout interface.
firewall1
DD-WRT Novice


Joined: 08 Apr 2011
Posts: 13

PostPosted: Tue Mar 20, 2018 14:02    Post subject: Reply with quote
Thank you to a freind in thailand who send me the backup of CFE rt-n12c1

I share for the other users. No easy to find it.



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