See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken

Linksys WRT54GS v1.1

From WikiDevi
Jump to: navigation, search

Linksys WRT54GS v1.1

Manuf/OEM/ODM CyberTAN

FCC approval date: 17 September 2004
Country of manuf.: China
Serial Num Prefix: CGN2
Series: WRT54GS

Local image
Linksys WRT54GS.png

Type: wireless router

FCC ID: Q87-WT54GV22
Industry Canada ID: 3839A-WT54GV22

Power: 12 VDC, 1 A
Connector type: barrel

CPU1: Broadcom BCM4712 (200 MHz)
FLA1: 8 MiB
8,388,608 B
65,536 Kib
8,192 KiB
64 Mib
0.00781 GiB
(Intel TE28F640J3C-120)
RAM1: 32 MiB
33,554,432 B
262,144 Kib
32,768 KiB
256 Mib
0.0313 GiB
(Hynix HY5DU561622DT-J)

Expansion IFs: none specified
JTAG: yes, 12-pin header, unpopulated
Serial: yes, 10-pin header, unpopulated, , (115200,8,N,1)

WI1 chip1: Broadcom BCM4712
WI1 chip2: Broadcom BCM2050
WI1 802dot11 protocols: bg
WI1 antenna connector: RP-TNC

ETH chip1: Broadcom BCM4712
Switch: Broadcom BCM5325E
LAN speed: 100M
LAN ports: 4
WAN speed: 100M
WAN ports: 1


Stock bootloader: CFE

Stock FW OS: Linux 2.4

Third party firmware supported: DD-WRT • (List), OpenWrt, Tomato • (List), TomatoUSB • (List), Broadband-Hamnet

Default SSID: Linksys (4 addl. devices)
Default IP address:
the IP is used by 1173 additional devices
of which 146 are Linksys devices
Default login user: blank
Default login password: admin
blank:admin credentials used by 279 additional devices
of which 141 are Linksys devices

802dot11 OUI: 00:13:10 (16 E, 17 W, 2004)
Ethernet OUI: 00:13:10 (16 E, 17 W, 2004)

 CPU1 brandWI1 chip1 brandWI1 chip2 brand
Linksys WRT54GS v1.0BroadcomBroadcomBroadcom
Linksys WRT54GS v1.1BroadcomBroadcomBroadcom
Linksys WRT54GS v2.0BroadcomBroadcomBroadcom
Linksys WRT54GS v2.1BroadcomBroadcomBroadcom
Linksys WRT54GS v3BroadcomBroadcomBroadcom
Linksys WRT54GS v4BroadcomBroadcomBroadcom
Linksys WRT54GS v5.0BroadcomBroadcomBroadcom
Linksys WRT54GS v5.1BroadcomBroadcomBroadcom
Linksys WRT54GS v6.0BroadcomBroadcomBroadcom
Linksys WRT54GS v7.0BroadcomBroadcom
Linksys WRT54GS v7.2BroadcomBroadcom
For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

Wireless-G Broadband Router with SpeedBooster

Links of Interest[edit]


Flashing DD-WRT[edit]


NEWD or VINT[edit]

WRT54GS v1.1 uses the Broadcom BCM4712 chip rev 1 but since the "wl0_corerev" is 7 (see NEWD or VINT for more info) WRT54GS v1.1 users should use standard NEWD builds

How to Flash[edit]

Make sure to get all the files you need first. Start with dd-wrt.v24_mini_generic.bin

  1. Perform a Hard reset or 30/30/30
  2. Upload dd-wrt through the firmware update page
  3. WAIT for at least five minutes before you continue! (longer is better) Give the router plenty of time to to boot.
  4. Perform a Hard reset or 30/30/30
  5. WAIT for at least five minutes before you continue! (longer is better) Give the router plenty of time to to boot.
  6. Power Cycle
  7. Open your browser to Configure to your liking. Enjoy.
  8. Check for recommended builds here.

Flashing OpenWrt[edit]

Linksys WRT54GS

Flashing Tomato[edit]

Flashing Gargoyle[edit]



Updating DD-WRT

If dd-wrt is already on the router follow these instructions. If stock firmware is on the router follow the flashing instructions.

  1. Check for recommended builds here first.
  2. Set your computer to a static IP of (or to whatever subnet the router is on) Disable all firewalls and security. Disable wireless on your computer and only have the router connected to the flashing computer by the ethernet cable between the two.
  3. Hard reset or 30/30/30 (If the router supports it, if not, reset to defults in the GUI) prior to flashing. Wait. Check for password page on re-login and change password.
  4. Flash firmware. You can use the webgui except if you have a belkin router. (For belkin use tftp.exe to flash)
  5. least three minutes. Lights should return to normal. See important2, below. Failing to wait is how most people brick their routers.
  6. Do a power cycle of the router. (Unplug the cord, count to 30 and plug it back in.)
  7. Wait for the lights to return to normal usually about 2 minutes.
  8. Hard reset or 30/30/30 again (If the router supports it, if not, reset to defults in the GUI). Wait. Check for the password page and re-login to change the password. Then you can reconfigure your settings manually.
  9. Once configured set your computer back to autoIP and autoDNS.

Important1: This Hard reset or 30/30/30 works fine for Asus router, but you do have to power cycle after the reset.

Important2: After you flash the firmware, and before you do the hard reset, the router will be building some nvram settings. YOU MUST WAIT FOR THIS TO FINISH PRIOR TO DOING ANYTHING WITH THE ROUTER INCLUDING A HARD RESET. Usually, you can tell when this process is completed by the WAN light coming on, but it does take several minutes. Go have a beer. There are starting to be more and more people who BRICK their routers by not waiting until the nvram is rebuilt, PRIOR to doing a hard reset. YOU NEED TO WAIT!


Reverting to OEM Firmware from DD-WRT[edit]

  1. Read the peacock announcement found here:
  2. Do a Hard reset or 30/30/30 on the router according to note 1 of the peacock announcement (30/30/30)
  3. Set a static IP on your computer to Subnet mask should be
  4. Connect the lan cable from your computer to a LAN port of your router. Make sure your router is plugged in. Nothing should be connected to your computer or the router except the LAN cable between them. Turn your firewall and any wireless computer connections OFF.
  5. Power cycle the router (unplug the power from the router for 30 seconds and then plug it back in)
  6. Open your browser to by putting that in the browser address window of your browser. You should open the linksys webgui and NOT a page that says Management Mode. If you see management mode, power cycle the router again.
  7. Enter your username and password
  8. Go to administration and firmware upgrade
  9. Navigate to the folder that you are using, and select WRT54GSv3_4.71.4.001_fw.bin once you've unzipped it.
  10. Hit upgrade
  11. When you get a success, wait FIVE FULL minutes.
  12. When you can again access the Linksys webgui using a browser at, do another Hard reset or 30/30/30 on the router.
  13. Reset your computer Ethernet connection to auto IP and auto DNS

JTAG-Serial Info[edit]


JTAG Pinouts[edit]

 nTRST  1o o2  GND
   TDI  3o o4  GND
   TDO  5o o6  GND
   TMS  7o o8  GND
   TCK  9o o10 GND
 nSRST 11o o12 N/C

Using Universal JTAG Adapter

  white  1o o2	black
    red  3o o4	GND
   blue  5o o6	GND
  green  7o o8	GND
 yellow  9o o10 GND
 orange 11o o12 N/C
  • /noemw switch required for flash

DD-WRT JTAG Recovery[edit]


  1. Backup CFE x2 (Compare the files, they must match exactly or there is something wrong with your JTAG setup)
  2. Erase Wholeflash x2
  3. Flash CFE
  4. Unplug Power
  5. Unplug JTAG Cable


  1. Set Rig ip static
  2. Plug network cable from rig to port 1
  3. Get TFTP ready, server ip -, Password - blank, file - dd-wrt.v24_mini_generic.bin
  4. Plug in power
  5. Wait for DMZ light to do a steady pulse, When it is lit on the 3rd time click upgrade. The DMZ light must be lit when you click upgrade.
  6. Hard Reset 30\30\30


Serial Pinouts[edit]

 VCC 1 o o 2  VCC
 TX1 3 o o 4  TX0
 RX1 5 o o 6  RX0
 N/C 7 o o 8  N/C
 GND 9 o o 10 GND
Hyper terminal Setup in Windows XP
In Windows XP, Click Start Button - All Programs - Accessories - 
   Communication - HyperTerminal
Enter a name for the connection, Click ok
Choose com port you adapter is plugged into, Click ok
 Bits per second = 115200
 Data Bits = 8
 Parity = none
 Stop bits = 1
 Flow control = none
Click ok
Click File - Save As, and select a place to save it to so you 
             don't have to enter the settings again.
Putty Setup in Windows XP
After installing putty, run it
 Serial line = The COM port your using for serial (ie. COM3)
 Speed = 115200
Click on Serial under Connection
 Serial line to connect to = same as above (Serial line)
 Speed (baud) = 115200
 Data bits = 8
 Stop bits = 1
 Parity = none
 Flow control = none
Click Session
 Enter a name for your connection under saved sessions
Click Save
Click Open

Serial Recovery[edit]

USB Info[edit]


vlan Info[edit]

DD-WRT vlan Info[edit]

WikiDevi:DD-WRT/VLAN Support

Confirmed the WRT54GS v1.1 supports port-based vlans via the GUI & nvram.

WRT54G v1.1's ports are mapped like this:

 4 3 2 1 | case labels
 3 2 1 0 | nvram port numbers


root@DD-WRT:~# nvram show | grep vlan.ports
vlan0ports=3 2 1 0 5*
vlan1ports=4 5
size: 19244 bytes (13524 left)
root@DD-WRT:~# nvram show | grep port.vlans
port5vlans=0 1 16
size: 19244 bytes (13524 left)
root@DD-WRT:~# nvram show | grep vlan.hwname
size: 19244 bytes (13524 left)
root@DD-WRT:~# lsmod
Module                  Size  Used by
ip_nat_pptp             2560   0 (unused)
ip_conntrack_pptp       3036   1
ip_nat_proto_gre        1664   0 (unused)
ip_conntrack_proto_gre    2584   0 [ip_nat_pptp ip_conntrack_pptp]
etherip                 5104   0 (unused)
switch-robo             5356   0 (unused)
switch-core             6352   0 [switch-robo]
root@DD-WRT:~# ls /proc/switch
root@DD-WRT:~# cat /proc/switch/eth0/vlan/0/ports
0       1       2       3       5t*
root@DD-WRT:~# cat /proc/switch/eth0/vlan/1/ports
4       5t
root@DD-WRT:~# cat /proc/switch/eth0/vlan/2/ports


root@DD-WRT:~# nvram set vlan0ports="2 1 0 5*"
root@DD-WRT:~# nvram set vlan1ports="3 4 5"
root@DD-WRT:~# nvram commit
root@DD-WRT:~# reboot


root@DD-WRT:~# nvram show | grep vlan.ports
vlan0ports=2 1 0 5*
vlan1ports=3 4 5
size: 19365 bytes (13403 left)
root@DD-WRT:~# nvram show | grep port.vlans
port5vlans=0 1 16
size: 19365 bytes (13403 left)
root@DD-WRT:~# nvram show | grep vlan.hwname
size: 19365 bytes (13403 left)


root@DD-WRT:~# nvram show | grep vlan.ports
vlan0ports=3 2 1 0 5*
vlan1ports=4 5
size: 19348 bytes (13420 left)
root@DD-WRT:~# nvram show | grep port.vlans
port5vlans=0 1 16
port4vlans=1 18 19
port3vlans=0 18 19
port2vlans=0 18 19
port1vlans=0 18 19
port0vlans=1 18 19
size: 19348 bytes (13420 left)
root@DD-WRT:~# nvram show | grep vlan.hwname
size: 19348 bytes (13420 left)


DarkShadow's Unit


DD-WRT Notes[edit]

[comment added 4/25/08 by WellingtonFelix] I installed the new version "dd-wrt.v24_mega_generic.bin" over default configuration of the version "dd-wrt.v23_vpn_generic.bin" and I had no problems.

[comment added 5/7/08 by Sapremias] Flashed dd-wrt.v24_mega_generic.bin directly from linksys web interface (version WRT54GSv3_4.71.4.001_fw.bin) without issue. -Sapremias

[comment added 10/5/08 by richwillal] I installed dd-wrt v24 sp1 Mega Vintage (dd-wrt.v24-9517_VINT_mega) from stock firmware with no issues. Standard process: 1) Reset router - reset for 30 secs w/ power on 2) Upload dd-wrt 3) Reset router - reset for 30 secs w/ power on 4) Disconnect/reconnect or ipconfig /renew

[comment added 04/02/09 by tribble222] I nearly bricked my router going directly from Linksys firmware to dd-wrt.v24-11296_VINT_STD.bin. Pinged on boot but tftp wouldn't work. Router didn't even respond to JTAG. Shorting pins 5&6 with the router unplugged somehow fixed everything. From there I was able to flash to mini, then back to std.

Hardware Modification[edit]

See Also[edit]