Previous Thread
http://www.myopenrouter.com/article/13859/How-To-Debrick-Your-NETGEAR-WNR3500...
Hi everyone, this is my first post.
This is all my fault, I know: I flashed my 3500l with a tomatousb fw, but did not change the fileextension to bin. As a result, the router does not boot anymore. Power LED lights up as it would normaly do, so does the corresponding ethernet port indicator LEDs when a cable is connected.
I can ping it for about 2 to 4 seconds after a hard reset (guess thats because CFE is giving the ping response, right?).
I already tried to tftp a new firmware, even with binding the routers MAC to eth0 (on OS X):
sudo arp -s 192.168.1.1 00:70:A4:C3:56:T5 ifscope en0
tftp 192.168.1.1
>tftp binary
>tftp trace
>tftp put firmwarenamehere
This all failed.
So my I ask: Is ther hope? Would it be my last chance to get a USB TTF adapter an debrick it over the serial console?
Thanks in advance,
Thomas
March 3, 2012 4:48 AM
March 3, 2012 5:09 AM
updated: March 3, 2012 5:21 AM
Yep. I already considered this. Just wanted to know, if there?s anything else I can try before buying a ttl cable (it seems like those cables aren't available here in germany).
[edit]: found this one on ebay
March 3, 2012 2:20 PM
Hi! I don't know, if there is any hope without a USB-TTF cable, but if you really need it, get a Nokia CA-42 datacable for under ~5$ from eBay and follow this guide to identify the wires: http://www.uchobby.com/index.php/2009/10/04/diy-usb-to-serial-cable-for-3/ That cable from FTDI is poorly available worldwide and completely overpriced. And that Nokia CA-42 cable is available in every country at a low price. I also got one laying around; even soldered an audio-jack connector, but never had to use it (lucky me ;)).
Administrator
- member since: 01/02/2008
- rank: 2 of 30025
- 50 articles authored
- 5 blog entries posted
- 96 forum threads started
- 271 comments
March 16, 2012 4:34 PM
Good luck! The guide should work like a charm. I've done it many times--the USB-TTL cable is really a lifesaver.
March 17, 2012 6:09 PM
The USB-TTL cable is the best way that I've seen. Still have mine left from my WGR614L days. =)
WNR3500Lv2 | TomatoUSB (Shibby Build) | Configured as Wireless Bridge
March 19, 2012 7:01 AM
Worked like a charm. These 3 Euro USB TTL converter I got from eBay are a fair deal.
Administrator
- member since: 01/02/2008
- rank: 2 of 30025
- 50 articles authored
- 5 blog entries posted
- 96 forum threads started
- 271 comments
April 19, 2012 2:44 PM
updated: April 20, 2012 9:58 AM
Is this the right and easiest cable to buy for debricking my router? http://www.ebay.co.uk/itm/new-PL2303-USB-RS232-TTL-Converter-Adapter-Module-c...
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
April 26, 2012 10:02 AM
Not much movement in this thread. I keep trying. Much appreciated if I could have a conform on the above adapter so I can go ahead.
I also tried connect my bricked router to my Mac. I see that I get an IP 169.254.225.4 from the router. When I try to SSH to that IP it's recognized, but asks for a password, and non of the "normal" passwords works. But I didn't think I could get connected at all.
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
April 26, 2012 9:41 PM
Not sure if that would work, because they don't have enough description details.
The level shifting 3.3v TTL adapter is must, you can't connect router straight to standard RS232 serial interface. And i don't know if that one has level shifting to 3.3v because they don't say..
The cheapest cables i know that work pretty well are CA-42 cables, they go for about 3-5$ a piece on e-bay. But you'll need a multimeter to find out whats what on it.
http://www.dd-wrt.com/wiki/index.php/Serial_Recovery
April 27, 2012 2:44 PM
Thanks buddee,Could you recommend a cable on ebay, on which the wiring is known?
Thanks!
Ps. As my router still has warranty, could I just send it to Netgear, or will the notice that I caused the bricking? Ds.
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
April 27, 2012 10:09 PM
You should be able to RMA it if you do not feel like de-bricking it via serial cable. Which would be much easier, as far as e-bay and choosing a proper adapter, just go to their site and search...
3.3v TTL adapter
You should get alot of returns, most of which will be shipping from hong kong, so it will take a while to get there, unless of course you live close to hong kong. One that i have bookmarked is..
http://www.ebay.com/itm/USB-to-TTL-5V-3-3V-TTL-STC-STM32-Download-Download-Th...
Which would work as far as i can tell, like i said, i use ca-42 cables...which are connectors for nokia phones, i cut the phone end off and use it, but i have a multi-meter, so i know whats what on the wire idents. Also another good cable is the FTDI 3.3v cable that is shown in the de-bricking guide.
http://www.myopenrouter.com/article/13859/How-To-Debrick-Your-NETGEAR-WNR3500...
Its probably the best cable i have ever seen, but it is expensive in my eyes because its around 20-25$ and there are much cheaper adapters that work just fine for serial connections to a router.
April 28, 2012 9:45 AM
I just bought the 3.3v TTL adapter you linked to. It was only $6.69 including freight, so there is not too much too loose :)
I have a multimeter, so I will start studying when I get it.
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
April 28, 2012 9:23 PM
updated: April 28, 2012 9:26 PM
You won't need the multi-meter for that adapter, it already says what is what on the bottom of the chip. No guess work involved. :)
Main thing with that adapter is to make sure you have the jumper pins set to 3.3v instead of 5v, which again is explained on the bottom of the chip.
April 30, 2012 2:55 PM
Thanks for the clarification. I ordered the adapter and I'm looking forward to receive it and see if I'm able to derbric the router from Mac with the OS X tutorial.
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
April 30, 2012 6:56 PM
Wouldn't this USB to TTL cable work? It lets you switch between 3.3v and 5v. From what I see it looks similar to the one referenced by buddee. It is also the same price that Matsaki paid $6.69. The difference is it is location in the USA.
http://www.ebay.com/itm/New-USB-2-0-to-UART-TTL-6PIN-Connector-Module-Serial-...
April 30, 2012 7:03 PM
As I live in Cyprus (Europe) I guess this would be the same if it works: http://www.ebay.co.uk/itm/USB-2-0-TTL-UART-6PIN-CP2102-Module-Serial-Connecto...
But I already ordered mine as buddee suggestion. No big deal as long as it works, and I will be able to do the rest.
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
April 30, 2012 7:13 PM
I was just trying to figure out if it was the right one. I might order one myself just to have it on hand. Plus I figured if it was the right one it could help some people in the US in a pinch if they need to get their router back up quick. From what I see they have a similar layout. I don't know enough about electronics to know if the components are different or whatever though.
Administrator
- member since: 01/23/2008
- rank: 1 of 30025
- 24 articles authored
- 12 forum threads started
- 425 comments
May 1, 2012 9:31 AM
grimreaper1014 said: I was just trying to figure out if it was the right one. I might order one myself just to have it on hand. ...It looks to me like it will work. You might want to look at the driver info and download to make sure that it will work on your computer.
May 19, 2012 12:57 PM
Just a simple suggestion that worked for me and I had the same issue as the OP:
Press and hold the reset button and power on the router. Keep the reset button pressed for about 2 mins then let go. For me, it took another couple of minutes (2-3) before the power light suddenly turned from amber to green and the rest of the lights powered on :)
I was in the middle of my search to find the appropriate cable and came across this simple tip on the forums. Hope it helps some of you!
May 21, 2012 4:54 PM
Thanks for the tip a sheikh. Unforetenetly I did not have the same luck as you. And I'm still waiting for my USB to TTL cable from Hong Kong :S
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
May 22, 2012 5:25 AM
@Matsaki
I can confirm that this cable will work, though we had some trouble getting it play nicely,
but I don't exactly remember what it was (I'll have to ask a friend of mine, he did all the heavy lifting).
May 26, 2012 9:23 AM
updated: May 26, 2012 2:39 PM
So today I got my TTL cable (finally). I'm sorry for my ignorance, but I'm not completely sure how to wire/connect the cable between the Mac and the router?
The tutorial for debricking using Mac seems clear enough so I hope it will run smoothly once I manage to et connected.
Installed X11, Macports and Minicom. Does the TTL cable also need a driver?? Can't see the adapter plugged in.
Netgear WNR3500L v2 - Macbook Pro - iPhone - Dreambox
Add Your Reply
Sponsored Links
Copyright © 2013
Capable Networks LLC.. All Rights Reserved.
RSS |
Privacy Policy |
Advertise With Us |
Terms of Use |
About Us |
Contact Us |
Site Map
Our Capable Community Network:
DVR playground |
Explore3DTV |
MediaSmart Home |
My Open Router |
DijitCommunity |
Robo Community |
Sansa Community |
TechLore |
TiVo Community
MyOpenRouter.com is not affiliated with NETGEAR®. NETGEAR is a registered trademark of NETGEAR, Inc. in the United States and/or other countries. Other brand names mentioned herein are for identification purposes only and may be trademarks of their respective holder(s). © 2011 NETGEAR, Inc. All rights reserved.
