Linksys WRT54G v8.1

multiple revisions of this device, use caution

bg (G54)
Wireless-G Broadband Router
Wikipedia	Linksys routers
InfoDepot Wiki	Linksys WRT54G v8.1
WikiDevi.wi-cat.ru	Linksys WRT54G v8.1
3rd Party Firmware
dd-wrt	Supported
OpenWrt	Not for 2MB Devices
Tomato any flavor	Not for 2MB Devices
Gargoyle	Not for 2MB Devices
Platform
Brand • Model • Rev	Linksys WRT54G v8.1
Serial number prefix	MDF0
FCC ID	Q87-WRT54GV81
Type	wireless router
Series	WRT54G
CPU1	Broadcom BCM5354
CPU1 Type	BMIPS3300
CPU1 Speed	240 MHz
Flash1 Chip	Spansion Model?
Flash1 Size	2 MiB2,097,152 B <br />16,384 Kib <br />2,048 KiB <br />16 Mib <br />0.00195 GiB <br /> (Parallel)
RAM1 Size	8 MiB8,388,608 B <br />65,536 Kib <br />8,192 KiB <br />64 Mib <br />0.00781 GiB <br />
RAM1 Chip	ISSI IS42S16400B
ETH chip1	Broadcom BCM5354
Switch	Broadcom BCM5354
Ethernet Port Count	1-100MbE-WAN 4-100MbE-LAN
Wired Standard	IEEE 802.3/3u
802dot11 OUI: none specified
Stock FW OS	Linux
Expansion IF types	none specified
Power	12 VDC, 0.5 A
Connector type	barrel
Other
Manuf/OEM/ODM	Gemtek WRTB-223G
3rd Party Firmware Support	DD-WRT • (List)
Retail
FCC approval date	30 October 2007
Radio 1
Chip1	Broadcom BCM5354
Wireless interface OUI	none specified
Antenna Connector Type	none specified
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
CPU1 brand Radio1 chip1 brand Radio1 chip2 brand Linksys WRT54G v1.0 Broadcom Broadcom Broadcom Linksys WRT54G v1.1 Broadcom Broadcom Broadcom Linksys WRT54G v2.0 Broadcom Broadcom Broadcom Linksys WRT54G v2.2 Broadcom Broadcom Broadcom Linksys WRT54G v3.0 Broadcom Broadcom Broadcom Linksys WRT54G v3.1 Broadcom Broadcom Broadcom Linksys WRT54G v4 Broadcom Broadcom Broadcom Linksys WRT54G v5.0 Broadcom Broadcom Broadcom Linksys WRT54G v5.1 Broadcom Broadcom Broadcom Linksys WRT54G v5.2 Broadcom Broadcom Broadcom Linksys WRT54G v6.0 Broadcom Broadcom Broadcom Linksys WRT54G v7.0 Atheros Atheros Linksys WRT54G v7.2 Broadcom Broadcom Linksys WRT54G v8.0 Broadcom Broadcom Linksys WRT54G v8.1 Broadcom Broadcom Linksys WRT54G v8.2 Broadcom Broadcom Linksys WRT54G-TM Broadcom Broadcom Broadcom Linksys WRT54GH Ralink Ralink Linksys WRT54GP2 Marvell Marvell Marvell Linksys WRT54GP2A-AT Intel XScale Inprocomm RFMD

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

• New WRT54G v8.1, v8.2; GS v7.2 On the DD-WRT Forum

Flashing

Flashing dd-wrt

 

Supported by dd-wrt as of = ?

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.

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.

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!

Pictures

User Images

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