Linksys WRT54GS v6

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Linksys WRT54GS.jpg
Wireless-G Broadband Router with SpeedBooster
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Platform
Brand Model Rev
Linksys WRT54GS v6.0
Serial Num. Prefix
CGN9
FCCID
Type
wireless router
CPU1
CPU1 Speed
200 MHz
Flash1 Type
Parallel
Flash1 Chip
Intel JS28F160 C3BD70 A6217291
Flash1 Size
2
2 MiB
2,097,152 B
16,384 Kib
2,048 KiB
16 Mib
MB
Flash1 Max Firmware Size
1769472 bytes
RAM1 Size
16
16 MiB
16,777,216 B
131,072 Kib
16,384 KiB
128 Mib
MB
RAM1 Chip
Samsung 619 K4S281632I-UC75
nvram Size
32
32 MiB
33,554,432 B
262,144 Kib
32,768 KiB
256 Mib
KB
ETH chip1
Switch
Port-based vlan
Yes/DD-WRT:GUI & nvram with micro-plus-SSH
Ethernet Port Count
1-10/100-WAN,
4-10/100-LAN
Wired Standard
IEEE 802.3/3u
Ethernet interface OUI
bootloader
BSP
Stock FW OS
VxWorks
Expansion IF types
none specified
Power
12 VDC, 0.5 A
Serial Port
x 1 (?,?,?,?,?)
JTAG Port
x 1
Supported by TJTAG/Version Yes/3.02
Other
Default IP address
192.168.1.1
Default login user
blank
Default login password
admin
Default SSID
linksys
Manuf/OEM/ODM
CyberTAN
3rd Party Firmware Support
Retail
FCC approval date 03 April 2006
Country of manuf China
radio1
Chip1
Chip2
Broadcom BCM2050
Wireless interface OUI
Antenna Connector Type
RP-TNC Removable
Wireless Standard
IEEE 802.11b/g
802.11g
up to 54 Mbps
802.11b
up to 11 Mbps
WiFi Operating Frequency
2.4 GHz
Radio cor_rev
9
Radio Capabilities
ap sta wet led wme 802.11d 802.11h rm cqa mbss4 afterburner acktiming
 FCC ID
Linksys WRT54G v6Q87-WT54GV60
 CPU1 brandRadio1 chip1 brandRadio1 chip2 brand
Linksys WRT54GS v1BroadcomBroadcomBroadcom
Linksys WRT54GS v1.1BroadcomBroadcomBroadcom
Linksys WRT54GS v2BroadcomBroadcomBroadcom
Linksys WRT54GS v2.1BroadcomBroadcomBroadcom
Linksys WRT54GS v3BroadcomBroadcomBroadcom
Linksys WRT54GS v4BroadcomBroadcomBroadcom
Linksys WRT54GS v5BroadcomBroadcomBroadcom
Linksys WRT54GS v5.1BroadcomBroadcomBroadcom
Linksys WRT54GS v6BroadcomBroadcomBroadcom
Linksys WRT54GS v7BroadcomBroadcom
Linksys WRT54GS v7.2BroadcomBroadcom
For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

Wikidevi Notes[edit]

WRT54GS v6.0 serial numbers appear to begin with CGN9.

WRT54G series on Wikipedia
Linksys WRT54Gxx page on the DD-WRT wiki

Links of Interest[edit]

Flashing[edit]

Flashing DD-WRT[edit]

These instructions are for the WRT54gS version v.5, v.5.1 and v.6. NOTE THE S.

IN SPITE OF SOME OTHER INSTRUCTIONS ELSEWHERE, YOU REALLY NEED TO CREATE A CUSTOM VX Image for your router. If you don’t you will get a generic mac address on your router and a generic mac address will mean most ISP won’t let you connect to the internet. Here is how to do it properly

There is good information at the scorpiontek site: http://www.scorpiontek.org/portal/content/view/27/36

Download the zipped files in GV5Flash.zip

Or you can download the same file from me here: Gv5Flash.zip

  1. Read the peacock announcement found here: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
  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 192.168.1.7
  4. Connect the lan cable from your computer to a LAN port of your router. Make sure your router is plugged in.
  5. Unzip the file you downloaded and place it in a location you can easily find on your computer
  6. Unzip the VXImgToolGui.zip file to the same folder as where you placed the other files you downloaded
  7. Delete the vxworks_prep_v03.bin file
  8. Go to this location and download the vxworks_prep_GS_v03.bin file: vxworks_prep_gs_v03.zip
  9. Click on the VXImgToolGui.exe program
    • Make sure the top button is on the right for WRT54GS, not the left for WRT54G.
    • Put the mac address from the bottom of your router in the box that says "Desired Mac Address"
    • Click on the three dots next to "output image" and save the file as My54gsImage.bin in the same folder as everything else is located.
  10. Power cycle the router (uplug the power from the router for 30 seconds and then plug it back in)
  11. Open your browser to 192.168.1.1 but 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.
  12. Enter "root" as the username and "admin" as the password
  13. Go to administration and firmware upgrade
  14. Navigate to the folder that you are using, and select vxworks_prep_GS_v03.bin
  15. Hit upgrade.
  16. Wait for FIVE FULL MINUTES. Go for a walk. Don't you TOUCH that router for FIVE MINUTES.
  17. When five full earth minutes have passed, power cycle the router
  18. Refresh your browser window. If you get a blank window, clear your browser cache. NOW you should be in the MANAGEMENT MODE window.
  19. Select the My54gImage.bin file that you created. Hit upgrade.
  20. Wait for the "Upgrade Success" message, and then WAIT FIVE FULL MINUTES again. Don't TOUCH your router.
  21. Start tftp.exe
    • Enter 192.168.1.1 as the address in the top box of tftp.exe
    • Leave the password blank
    • Select the 12548 Newd_Micro.bin firmware
    • Set retries to 99.
    • Power cycle the router
    • Count to 2
    • Hit upgrade
  22. When you get a success, wait FIVE FULL minutes.
  23. When you can access the dd-wrt webgui using a browser at 192.168.1.1, power cycle the router.
  24. When you can again access the dd-wrt webgui using a browser at 192.168.1.1, do another Hard reset or 30/30/30 on the router.
  25. Reset your computer ethernet connection to auto IP and auto DNS
  26. Check for recommended builds here.


Upgrading[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 192.168.1.7. (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. Wait...at 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[edit]

Reverting to OEM Firmware from DD-WRT[edit]

To get back to VxWorks (default firmware) you need special instructions.

http://www.bitsum.com/openwiking/owbase/ow.asp?WRT54G5%5FCFE#h13
http://www.scorpiontek.org/portal/content/view/31/36/

JTAG-Serial Info[edit]

JTAG[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
 yelow    9o o10  GND
 orange  11o o12  N/C
  • /noemw /nocwd switches required

DD-WRT JTAG Recovery[edit]

JTAG:

  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

TFTP:

  1. Set Rig ip static 192.168.1.10
  2. Plug network cable from rig to port 1
  3. Get TFTP ready, server ip - 192.168.1.1, Password - blank, file - dd-wrt.v24_micro_generic.bin
  4. Plug in power
  5. As soon as windows says "connected" hit upgrade. May have to use a network hub to make sure windows is always connected.
  6. Hard Reset 30\30\30

Serial[edit]

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
Set:
 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

DD-WRT Serial Recovery[edit]

Modified Redhawk0 instructions

  1. Connect Serial cable
  2. Start one of the programs from above
  3. Get TFTP ready with file selected
  4. Use dd-wrt.v24_micro_generic.bin
  5. Connect power to the router
  6. start a rapid fire Cntl-C as you plug the router to power
  7. type "nvram erase" w/o quotes, hit enter
  8. type "flash -noheader : flash1.trx" w/o quotes, this starts the tftp daemon, hit enter
  9. but have tftp.exe ready
  10. Click go or start on TFTP
  11. give it 5 minutes after it finishes
  12. then power cycle....hard reset...then config
  13. when it stops spitting out txt in the serial consol....hit the enter key...you should get a login prompt...at that point, power cycle it, Hard reset or 30/30/30...then config
  14. you'll see it boot up

USB Info[edit]

NO USB

vlan Info[edit]

DD-WRT vlan Info[edit]

Confirmed the WRT54GS v6.0 supports port-based vlans via the GUI and nvram with build 14853 micro-plus-SSH.

WRT54GS v6.0's ports are mapped like this:

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

Defaults[edit]

[email protected]:~# nvram show | grep vlan.ports
vlan1ports=4 5
vlan0ports=3 2 1 0 5*
size: 17327 bytes (15441 left)
[email protected]:~# nvram show | grep port.vlans
port5vlans=0 1 16
port4vlans=0
port3vlans=0
port2vlans=0
port1vlans=0
port0vlans=1
size: 17327 bytes (15441 left)
[email protected]:~# nvram show | grep vlan.hwname
vlan1hwname=et0
vlan0hwname=et0
size: 17327 bytes (15441 left)
[email protected]:~# lsmod
Module                  Size  Used by
ip_nat_pptp             2192   0 (unused)
ip_conntrack_pptp       2524   1
ip_nat_proto_gre        1552   0 (unused)
ip_conntrack_proto_gre    2312   0 [ip_nat_pptp ip_conntrack_pptp]
switch-robo             5036   0 (unused)
switch-core             5984   0 [switch-robo]
[email protected]:~# ls /proc/switch
eth0
[email protected]:~# cat /proc/switch/eth0/vlan/0/ports
0       1       2       3       5t*
[email protected]:~# cat /proc/switch/eth0/vlan/1/ports
4       5t
[email protected]:~# cat /proc/switch/eth0/vlan/2/ports
4
[email protected]:~#

Commands[edit]

[email protected]:~# nvram set vlan1ports="3 4 5"
[email protected]:~# nvram set vlan0ports="2 1 0 5*"
[email protected]:~# nvram commit
[email protected]:~# reboot

nvram[edit]

[email protected]:~# nvram show | grep vlan.ports
vlan0ports=2 1 0 5*
vlan1ports=3 4 5
size: 17433 bytes (15335 left)
[email protected]:~# nvram show | grep port.vlans
port5vlans=0 1 16
port3vlans=0
port1vlans=0
port4vlans=0
size: 17433 bytes (15335 left)
port2vlans=0
port0vlans=1
[email protected]:~# nvram show | grep vlan.hwname
vlan1hwname=et0
size: 17433 bytes (15335 left)
vlan0hwname=et0
[email protected]:~#

Pictures[edit]

DarkShadow's Unit
FCCID Q87-WT54GV60

Notes[edit]

Hardware Modification[edit]

See Also[edit]