Linksys WRT54G-RG

Default IP address: 192.168.1.1
the IP 192.168.1.1 is used by 1326 additional devices
of which 155 are Linksys devices
Default login user: blank
Default login password: admin
blank:admin credentials used by 280 additional devices
of which 135 are Linksys devices

Manuf/OEM/ODM

CyberTAN

3rd Party Firmware Support

DD-WRT • (List)
, OpenWrt • (List | Dev | DLs)
, Tomato • (List | DLs)
, TomatoUSB • (List | DLs)

Retail

FCC approval date

31 May 2005

Radio 1

Chip1

Broadcom BCM5352E

Chip2

Broadcom BCM2050

Wireless interface OUI

none specified

Antenna Connector Type

RP-TNC

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

Radio Capabilities

ap sta wet led wme 802.11d 802.11h rm cqa mbss4 afterburner acktiming

	FCC ID
Linksys WRT54G v4	Q87-WT54GV40
Linksys WRT54G-TM	Q87-WT54GV40
Linksys WRT54GL v1.0	Q87-WT54GV40
Linksys WRT54GL v1.1	Q87-WT54GV40
Linksys WRT54GS v3	Q87-WT54GV40
Linksys WRT54GS v4	Q87-WT54GV40
Linksys WRT54GS v5.0	Q87-WT54GV40
Linksys WRT54GS v5.1	Q87-WT54GV40

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

Links of Interest

Flashing

NOTE: During configuration or flashing a device, the only things that should be hooked to the device is the computer and power.

Flashing dd-wrt

Supported by dd-wrt as of = v24-SP2 build 12548

Linksys WRT54G-TM and WRT54G-RG are identical in terms of hardware, but not firmware. You MUST USE THE CORRECT firmware files. The WRT54G-TM was a t-mobile router put out by Linksys, and the WRT54G-RG was a Rogers router put out by rogers in Canada.

Download the CFE_Updater-WRT54G-RG.bin from here: ftp://dd-wrt.com/others/tornado/CFE_Updater/
For the RG Router double check that you got the file with RG in the filename!
Download the TFTP.exe file from here: ftp://dd-wrt.com/others/tornado/Windows-TFTP
Download the svn 12548 NEWD_Mini.bin (NOT NEWD2!) file from here: ftp://dd-wrt.com/others/eko/V24_TNG/svn12548/
Read the peacock announcement here: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
Do a proper hard reset on your router, according to the instructions at note 1 of the peacock announcement. Because you do not have dd-wrt firmware on the router at this point, you will not be prompted for a password.
Connect your computer to your router with a lan cable, connecting to a LAN port on the router.
Set your computer to a static IP address of 192.168.0.17 and a 255.255.255.0 subnet mask.
Open your browser window to 192.168.0.1. You should see the linksys webgui. If you don't power cycle your router.
Go to administration, firmware upgrade
Select the file CFE_Updater-WRT54G-RG.bin (the one you downloaded in the first step) and click upgrade.
GO FOR A WALK for at least 5 minutes. IF YOU TOUCH YOUR ROUTER YOU WILL LIKELY BRICK IT!
Change your computer to a static IP of 192.168.1.17. THIS IS VERY IMPORTANT!
Open a command window and try to ping 192.168.1.1. with the "ping 192.168.1.1. -t" command. You should get some timeouts. When you get a ttl=100, wait two more minutes. Keep this window open.
Open up tftp.exe
Select the address of 192.168.1.1. Leave the password blank. Set it to 99 retries and pick the file dd-wrt.v24-12548_NEWD_mini.bin that you previously downloaded.
Hit upgrade.
GO FOR ANOTHER WALK. WAIT AT LEAST 5 MINUTES. Watch the ping window. You should see ttl=64. When you do, wait two more minutes.
Set your web browser to 192.168.1.1. You should see the dd-wrt password page.
Power cycle your router.
Try to open the webgui again a 192.168.1.1. When you can, change your password and user name to anything.
Do ANOTHER Hard reset on the router. Again try to open 192.168.1.1. When you can, you should see the password page again. Now finally set your password and configure your router.
Set your computer back to auto IP and auto DNS.
Check for recommended builds here.

If you wish to use another build rather than the mini build, you can upgrade with the webgui, following the instructions at note 1 of the peacock thread. This router will take any generic build.

Please note that there is no way to go back to Rogers firmware on this router without a jtag cable and a stock rogers wholeflash.

Flashing OpenWrt

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram. DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation. This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

Devices with Broadcom WiFi chipsets have limited OpenWrt supportability (due to limited FLOSS driver availability for Broadcom chips). Consider this when choosing a device to buy, or when deciding to flash OpenWrt on your device because it is listed as supported. See Broadcom WiFi for details.

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
On the OpenWrt Forum
Support started version: 0.9
Current supported version: 22.03.5

Please insert instructions here

Flashing Tomato

Please insert instructions 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.

Check for recommended builds here first.
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.
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.
Flash firmware. You can use the webgui except if you have a belkin router. (For belkin use tftp.exe to flash)
Wait...at least three minutes. Lights should return to normal. See important2, below. Failing to wait is how most people brick their routers.
Do a power cycle of the router. (Unplug the cord, count to 30 and plug it back in.)
Wait for the lights to return to normal usually about 2 minutes.
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.
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

Please note that there is no way to go back to Rogers firmware on this router without a jtag cable and a stock rogers wholeflash.

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

JTAG Recovery

Erase Wholeflash x2
Flash CFE
Unplug Power
Unplug JTAG Cable

TFTP:

Set Rig ip static 192.168.1.10
Plug network cable from rig to port 1
Plug in power
click upgrade.
wait, wait, wait. If you cannot browse the GUI of the router, return to step 1.
Hard Reset 30\30\30

Serial

Serial Pinouts

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

Serial Recovery

Modified Redhawk0 instructions

Print out these instructions for Off-Line use
Connect PC to router with a network cable
Configure PC with a static IP of 192.168.1.10
Connect Serial cable
Start one of the programs from above
Get TFTP ready with file selected
Use dd-wrt.v24_mini_generic.bin
Connect power to the router
start a rapid fire Cntl-C as you plug the router to power
type "nvram erase" w/o quotes, hit enter
type "flash -noheader : flash1.trx" w/o quotes, this starts the tftp daemon, hit enter
but have TFTP ready
Click go or start on TFTP
give it 5 minutes after it finishes
then power cycle....Hard reset or 30/30/30...then config
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
you'll see it boot up