Linksys E1000 v2.1

Overview
E1000 v2.1 serial numbers appear to start with CNV2.

"3763-11200701R" is silkscreened on the board in the FCC photos.

Listed on the 'Linksys routers' page on Wikipedia

The default SSID is probably CiscoXXXXX where XXXXX is the last 5 digits of the serial number. If the device has been configured with Cisco Connect the device will probably have a randomly generated SSID.

Supported by K26RT-N builds of Tomato by Shibby.

Links of Interest

 * DD-WRT Firmware Development for Linksys E1000 v2.1
 * Tomato Firmware Development for Linksys E1000 v2.1

Flashing dd-wrt
Supported by dd-wrt as of = 16968

Please enter flashing instrustions here

Flashing Tomato
Please enter flashing instrustions here

Serial Pinouts
This image contains the pin outs for the E1000 v2.0 version, however

these pin outs are identical to the v2.1 version of the Linksys E1000 v2.1

Router.

Serial Recovery
Serial Interfaces

You need a level shifting 3.3v TTL adapter. You can get Nokia CA-42

cables online for about 3.00 and cut the phone end off. Then you have to

figure out what each wire does. You need only grd, tx and rx connected

properly for the serial interface to work.

When I plugged it into my XP rig...the cable was not recognized and no

drivers found during the PnP process.

I downloaded a utility determining the attached hardware (UVCViewer)

http://www.users.on.net/~fzabkar/USB_IDs/UVCView.x86.exe

Then downloaded the Prolific Driver from here

http://www.prolific.com.tw

So...

Orange = GND Blue = Rx Red = Tx

Once loaded and connected...my laptop sees the unit attached to COM8....

configured Putty....and all is well. LOM stated: No there is no fixed standard for the colors of the wires and obviously

not on the number of wires either. My first CA-42 had 3 wires and the

ones I bought later had 5, the picture in my post above is from one of

those. You can carefully remove the plastic molding of the phone connector

and see where each wire is going and find out which color the respective

signals are on. Schematic of the Nokia phone connector here:

http://www.hardwarebook.info/Pop-Port strfr stated: The "level shifting 3.3v TTL adapter" is must, you can't

connect router straight to standard RS232 serial interface. Learned after

hours of trying.. ;] Cheap CA-42 is all right, even the Chinese clone

with ARK3116 chip thus you will not find proper driver for Win7 64bit

system. Windows XP mode is the solutions in such a case.

Serial Commands Erase Nvram Power cycle the router and while it is booting hit control C quickly just

as your router starts You should get a CFE> prompt The most common command you will use is the "nvram erase" command. This

command will erase the nvram values that are often the cause of bricked

routers At the cfe prompt: cfe> nvram erase [enter]

To flash the firmware

This assumes you have a ttl adapter connected and ready to go. There is

reference to stock firmware. This does not apply to router that used to

run vxworks. All of those, have jtag tmk..

connect that bitch (the router to your serial adapter).. 115200,8,1,n and

no flow control are the com, param's I use hyperterminal. In the terminal, boot the router. Immediately start hitting ctrl-c. If you hit it right you will be at the

cfe prompt: cfe> Execute the nvram erase command at the CFE prompt

Get the tftp utility ready to flash the STOCK firmware for your router so

all you need to do is hit enter to launch. You are going to tell the router to accept a tftp flash of firmware. It

times out quickly so that is why you need to get the utility ready to

launch. Static ip on your rig.. 192.168.1.10, mask 255.255.255.0, not necessary but

gateway 192.168.1.1 At the cfe prompt: flash -ctheader : flash1.trx hit enter.. the router will want an upload of the firmware. It will time

out after three tries. Don't let it time out, now launch the tftp utility.

It will upload, program and then you will be back at the cfe prompt. This

will take some time. You will see what is happening in the console. You will be back at the cfe prompt when it is done: cfe> issue a "go" command: go [enter] the router will launch its new firmware. Let it boot. It will boot 2 ~ 3 times.. You are done. Now install some custom firmware again. Good Luck..

Pictures
Retail Images