Linksys WRT54GS v3

WRT54GS v3.0 serial numbers begin with CGN5.

Specs
Platform Serial Num. = CGN5 FCC ID = Q87-WT54GV40 Industry Canada ID = ? CPU Type = Broadcom BCM5352E MIPS Rev = ? CPU Speed = 200 MHz Bus = ? Flash Type = Parallel Flash Chip = ? Flash Size = 8 MB Max Firmware Size = ? RAM Size = 32 MB RAM Chip = ? nvram Size = 32 kb ETH chip1 = Broadcom BCM5352E Switch = Broadcom BCM5352 (SoC) vlan Support = ? Ethernet Port Count = 1-10/100-WAN 4-10/100-LAN Wired Standard = IEEE 802.3/3u Ethernet interface OUI = ? boot_wait = ? bootloader = CFE Flash Card Socket/Type = No SD/MMC Mod Support = No Expansion IF types = none specified PoE = No Power = 12 VDC, 1 A Connector type/size = Barrel Plug LEDs/Color = ? Size = ? USB = No Serial Port = 2 JTAG Port = Yes Supported by TJTAG 3.02 = Yes Supported by dd-wrt as of = ? dd-wrt K2.4 Support = Yes dd-wrt K2.6 Support = No Special Features = ? Radio (wl0) Wireless Radio = Broadcom BCM2050KML WLAN DSP processor = Broadcom BCM5352E (SoC) Wireless interface OUI = ? Antenna Connector Type = RP-TNC MIMO status = ? Wireless Standard = IEEE 802.11b/g 802.11g = 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11b = 1, 2, 5.5, 11 Mbps WiFi Operating Frequency = 2.4 GHz Radio cor_rev = 9 Radio Capabilities = ? Other Default IP address = 192.168.1.1 Default login user = blank Default login password = admin Default SSID = ? OEM = CyberTAN 3rd Party Firmware Support = DD-WRT, Tomato, OpenWrt, TomatoUSB

Links of Interest

 * [[media:Linksys WRT54GS v7-Datasheet.pdf|Datasheet.pdf]]
 * [[media:Linksys WRT54GS-User Guide.pdf|User Guide.pdf]]
 * [[media:Linksys WRT54GS-Quick Install.pdf|Quick Install.pdf]]

Flashing DD-WRT

 * 1) Read the peacock announcement found here: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
 * 2) Do a HARD reset 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. Subnet mask should be 255.255.255.0.
 * 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 (uplug the power from the router for 30 seconds and then plug it back in)
 * 6) Open your browser to 192.168.1.1 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) Leave the username blank and enter "admin" as the password
 * 8) Go to administration and firmware upgrade
 * 9) Navigate to the folder that you are using, and select dd-wrt.v24_mini_wrt54gs.bin
 * 10) Hit upgrade
 * 11) When you get a message that the upgrade is successful, wait FIVE FULL minutes before continuing.
 * 12) If you don't get success, repeat from steps 6 up to this one. If you still don't get success, clear your browser cache. Try using a different browser as well, to navigate to 192.168.1.1.
 * 13) When you can access the dd-wrt webgui using a browser at 192.168.1.1, power cycle the router.
 * 14) When you can again access the dd-wrt webgui using a browser at 192.168.1.1, do another HARD reset on the router.
 * 15) At this point you can choose to put a different build on, depending on what you needs are.
 * 16) Reset your computer ethernet connection to auto IP and auto DNS
 * 17) Check for recommended builds here

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 yelow   9o o10  GND orange 11o o12  N/C

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

DD-WRT Notes
[Comment added 05/03/06 by PhoneBoy] On my WRT54GSv3, I found that the device wouldn't take ANY firmware unless I reset it using the button rather than just factory reset from the web interface. Word of warning. I was able to download and install the firmware for the purposes of getting vpn up and running. The firmware installed and everything is as before. however, still no vpn.