Linksys WRT54GS2

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bg (G54)
Wireless-G Broadband Router with Speed Booster
Linksys WRT54G2.jpg
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3rd Party Firmware
dd-wrt
OpenWrt
Not for 2MB Devices
Tomato any flavor
Not for 2MB Devices
Gargoyle
Incompatible
Platform
BrandModelRev
Linksys WRT54GS2 v1.0
Serial number prefix
CUQ01
FCC ID
IC ID
Board ID
3763-14143002R
Type
wireless router
Series
WRT54GS2
CPU1
CPU1 Type
MIPS BMIPS3300 (R1)
CPU1 Speed
240 MHz
Flash1 Chip
Macronix MX29LV160CTTC-70G
Flash1 Size
2 MiB2,097,152 B <br />16,384 Kib <br />2,048 KiB <br />16 Mib <br />0.00195 GiB <br />
RAM1 Size
16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br />
RAM1 Chip
SK hynix HY57V641620FTP-7
nvram Size
32K
ETH chip1
Switch
Ethernet Port Count
1-100MbE-WAN
4-100MbE-LAN
Wired Standard
IEEE 802.3/3u

802dot11 OUI: 00:23:69 (12 E, 19 W), 68:7F:74 (13 E, 16 W)
Ethernet OUI: 00:23:69 (12 E, 19 W), 68:7F:74 (13 E, 16 W)

Stock bootloader
BSP
Stock FW OS
VxWorks
Expansion IF types
none specified
Power
12 VDC, 0.5 A
Connector type
barrel
Serial Port (UART)
yes; 12-pin header; unpopulated
JTAG Port
yes; 5-pad header; unpopulated
Other

Default SSID: linksys (53 addl. devices)
Default IP address: 192.168.1.1
the IP 192.168.1.1 is used by 1304 additional devices
of which 153 are Linksys devices
Default login user: blank
Default login password: admin
blank:admin credentials used by 267 additional devices
of which 134 are Linksys devices

Default Channel(s)
6
Manuf/OEM/ODM
3rd Party Firmware Support
DD-WRT • (List)
Retail
FCC approval date 23 January 2008
Country of manuf China
Radio 1
Chip1
Wireless interface OUI
00:23:69, 68:7F:74
Antenna Connector Type
none, internal
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
13
 FCC ID
Linksys WRT54G2 v1.0Q87-WRT54G2V1

For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

For a list of all currently documented Linksys device with specifications, see Linksys.

54 Mbps - 2.4GHz 802.11g = G54 class


Overview

"3763-14143002R" is silkscreened on the board.

Same hardware as WRT54G2 v1.3

Links of Interest

Flashing

Flashing DD-WRT

 

Supported by dd-wrt as of = Nov 05, 2009

  1. Configure your computer's local lan ethernet address to 192.168.1.10, subnet 255.255.255.0, gateway 192.168.1.1 . Then connect an Ethernet cable to your computer and port 1 of your router. (Do Not Use Wireless)(Nothing else connected to router)
  2. Perform a Hard reset or 30/30/30.
  3. Open your browser to http://192.168.1.1.
  4. Use the firmware upgrade dialog to flash Vxworkskiller-GS2V1.bin.
  5. WAIT for at least five minutes before you continue! (longer is better) Give vxworks killer plenty of time to do its magic!
  6. You will not be able to browse the WRT54GS2v1 at this point, but you should be able to ping 192.168.1.1. If the router doesn't reply you haven't set your computer's network settings correctly (on step 1)
  7. Tftp the DD-WRT firmware to the router, use latest dd-wrt.v24_micro_generic.bin from the folder where you got these instructions; after sucessful tftp, wait 5 min for the router to finish writing new nvram deafults, etc... It should reboot on its own at least 2 times, so give it 5 min and then go to http://192.168.1.1 (If it not reboot on its own, wait another 2 min, and then power cycle it) , you should see the password reset page. Don't worry about changing it at this point.
  8. Perform a Hard reset or 30/30/30.
  9. WAIT for at least 5 minutes before you continue! (longer is better) Give the router plenty of time to to boot.
  10. Browse 192.168.1.1, you should see the password reset page, change it! Then configure.
  11. Check for recommended builds here.

Upgrading

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

Reverting to OEM Firmware from DD-WRT

JTAG-Serial Info

JTAG

JTAG Pinouts

 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
  • /noreset switch required

DD-WRT JTAG Recovery

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

Serial Pinouts

 VCC 1 o
  TX 3 o
  RX 5 o
 N/C 7 o
 GND 9 o

DD-WRT Serial Recovery

Modified Redhawk0 instructions

  1. Print out these instructions for Off-Line use
  2. Connect PC to router with a network cable
  3. Configure PC with a static IP of 192.168.1.10
  4. Connect Serial cable
  5. Start one of the programs from above
  6. Get TFTP ready with file selected
  7. Use dd-wrt.v24_micro_generic.bin
  8. Connect power to the router
  9. start a rapid fire Cntl-C as you plug the router to power
  10. type "nvram erase" w/o quotes, hit enter
  11. type "flash -noheader : flash1.trx" w/o quotes, this starts the tftp daemon, hit enter
  12. but have TFTP ready
  13. Click go or start on TFTP
  14. give it 5 minutes after it finishes
  15. then power cycle....Hard reset or 30/30/30...then config
  16. when it stops spitting out txt....hit the enter key...you should get a login prompt...at that point, power cycle it, hard reset...then config
  17. you'll see it boot up


Pictures

DarkShadow's Unit
FCCID Q87-WRT54G2V1