Linksys WRT54G v8.1

WRT54G v8.1 units presumably have serial numbers prefixed with MDF0. The stock OS on these units is Linux, not VxWorks.

Specs
Platform Serial Num. = MDF0 FCC ID = Q87-WRT54GV81 Industry Canada ID = ? CPU Type = Broadcom BCM5354KFBG (BCM5354K chip rev 2 SoC) MIPS Rev = ? CPU Speed = 240 MHz Bus = ? Flash Type = Parallel Flash Chip = Spansion Model? Flash Size = 2 MB Max Firmware Size = 1900544 bytes RAM Size = 8 MB RAM Chip = ISSI IS42S16400B nvram Size = 32 kb ETH chip1 = Broadcom BCM5354 Switch = Broadcom BCM5354KFBG (BCM5354K chip rev 2 SoC) Port-based vlan = ? 802.1q vlan = ? Ethernet Port Count = 1-10/100-WAN 4-10/100-LAN Wired Standard = IEEE 802.3/3u Ethernet interface OUI = none specified boot_wait = ? bootloader = CFE Flash Card Socket/Type = No SD/MMC Mod Support = No Expansion IF types = none specified PoE = No Power = 12 VDC, 0.5 A Connector type/size = Barrel plug LEDs/Color = ? Size = ? USB = No Serial Port = Yes JTAG Port = Yes Supported by TJTAG/Version = Yes/3.02 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 BCM5354KFBG (BCM5354K chip rev 2 SoC) WLAN DSP processor = Broadcom BCM5354KFBG (BCM5354K chip rev 2 SoC) Wireless interface OUI = none specified Antenna Connector Type = Fixed 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 = ? Radio Capabilities = ? Other Default IP address = ? Default login user = ? Default login password = ? Default SSID = ? OEM = Gemtek WRTB-223G (WRTB-223G_V02) 3rd Party Firmware Support = DD-WRT

Links of Interest

 * New WRT54G v8.1, v8.2; GS v7.2

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 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. 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 d-wrt.v24_micro_generic.bin
 * 10) Hit upgrade
 * 11) When you get a success, wait FIVE FULL minutes.
 * 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 or 30/30/30 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.

Pictures
Images

DD-WRT Notes
The WRT54Gv8.1 router already has a Linux CFE in the flash. There is no need for running any prep or killer file before the initial flash.

This model also has a 128K compressed CFE so it will load micro_plus and micro_plus_ssh directly. Initial flashing of this model requires a modified file with the proper header. You can obtain this file here. After this file is loaded you can then upgrade to any micro_generic.bin file....or one of the micro_plus, micro_plus_ssh mentioned above.