Luc Pauwels

SMC Barricade
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[ Main | More Hints | Downgrade Instructions from SMC | Console and TFTP | Resetting and Downgrading a Router | LPR Printing via SMC 7004AWBR from Mac ]

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My SMC Barricade Tips and Tricks page has been online for a couple of months now, and I was a bit surprised by the great feedback I have received from a lot of people! It seems there was really a need for firmware downgrade instructions...

I have been swamped with work lately, but I have finally found some time to put this information online. Most of the stuff on this page I haven't tried myself, so I am providing this information "as is". A final word of caution before I continue:

The instructions below may cause your Barricade router to stop functioning. Use them with caution!

Now that you have been warned, enjoy!

Downgrade Instructions from SMC
(This information was provided by SMC Europe Technical Support)

Regarding my problems with firmware 1.95n, SMC Benelux technical support has sent me a workaround for the wireless LAN problem, and also some detailed instructions for downgrading my router from firmware 1.95n to 1.94a2:

I send you the procedure to downgrade to
1.94a2 version.

Please try first to take away the first line
of the "Virtual server option" if you have it
set. Just start your "Virtual server" rules
from line 2 please. This could let your wireless
activity to come back.

I invite you to proceed to a TFTP procedure
that will allow you to reset your Barricade to
factory defaults settings.

Complete return to version 1.94 using the TFTP
command can be done in three steps :

- Reset the Barricade till it starts blinking
  very fast (pressing the reset button on the
  back or making a short-circuit on pins 3 and 8
  of the Com port).
- Run the command : tftp -i put...
- Reset the Barricade till it blinks fours times
  (this time leds should not blink so fast).

Go into the Dos prompt and type in as following :

tftp -i put nameofthefile.bin

Please note that the name of the file is the one
of the firmware version that you possess on your
computer (from the cd or from the website

Version 1.94a2 of the Barricade firmware was included in this mail (attached file: "AWBR194a2.BIN"). You can get it here.

Console and TFTP
(This information was provided by Mike Haywood)

The following instructions were contributed by Mike Haywood. All information was supplied verbally by the telephone support desk at SMC-Europe.

The Console Session allows you to reset your Barricade when you can no longer use your administration password. The TFTP Session is basically identical to the TFTP downgrade procedure I received from SMC support, but the instructions are a bit more detailed.

Console Session

The 7004AWBR has a serial (COM) port on the rear panel which can be used either for connecting a dial-up modem or for connecting a management console.

The management console may be useful when access to the router's management functions cannot be achieved via a Web browser - particularly if it is not possible to login as System Administrator.

To establish a management console session, the following are needed:

The following procedure will allow access to a basic set of management functions via the console:

TFTP Session

The router contains a TFTP (Trivial File Transfer Protocol) server which enables it to receive files via a network connection and place them within the file structure of the device.

This technique may be useful to upload a binary file when the router's firmware cannot be upgraded via the "Upgrade Firmware" button on the Administrator's Toolbox page, or the Windows executable version of a firmware upgrade will not run successfully.

On a PC connected to the same network segment as the router:

Note that the above steps must be run from a PC with an operating system which supports the TFTP service (eg. Windows XP, Windows 2000). If the TFTP service is not supported, the response "Bad command or filename" will be returned when the TFTP command is issued. To check if the TFTP service is supported, issue just the command "TFTP" at the DOS prompt. This will return Help information if the service is present on the PC.

Resetting and Downgrading a Router
(This information was provided by Thomas Day Newbold)

The following procedure was contributed by Thomas Day Newbold. These instructions were supplied to him by SMC support.

Nullmodem Cable Reset

To reset and reboot the Barricade via COM port (after recovery mode it is not pingable or web console accessible):

Get a working serial nullmodem cable

Connection through com port to PC

new connection over com1/2
turn on the router
if you see AT on the screen -> 2x Enter
im menu: run the RR command
configure your nic to static ip (f.e.
gateway, dns should be the router

try to ping it.

Downgrade using a TFTP Session

This is the set of instructions provided by SMC support to downgrade from v.1.95:

  1. Download (and unzip into a root directory like C:\> ) appropriate firmware binary file .BIN for the target firmware version that you want to revert to.
  2. go to DOS command prompt in W2K
  3. type the following into the command prompt (do NOT press enter yet):
  4. TFTP -i PUT filename.BIN
  5. Put the Barricade into crash recovery mode (as you have described that procedure, note: I did not unplug everything).
  6. Once the M1 and M2 lights are blinking 8 times per second continuously, press enter to execute the TFTP command above
  7. Once the file transfer is successfully completed, unplug the Barricade for 10 seconds and plug it back in.
  8. Then, refer to nullmodem cable reset and reboot instructions from previous section.

LPR Printing via SMC 7004AWBR from Mac
(This information was provided by Timothy Sipples)

I noticed on your excellent SMC 7004AWBR web site that you're looking for information on how to print from older MacOS releases to the SMC's built-in print server.

That's pretty easy, actually. Just get Apple's LaserWriter software, Version 8.5.1 or later. (It's already part of MacOS 8.1 and higher, so no need to download anything.) LaserWriter Version 8.6 is supported on MacOS 7.6.1 and higher, for example. Since Version 8.5.1, the LaserWriter software (MacOS's printing system) supports LPR protocol.

You can find out more information here (obsolete, there is a local copy here):

and, if necessary, download LaserWriter 8.6 here:

and 8.6.1 here:

Hope that helps!