Linksys WRT54GS v4

multiple revisions of this device, use caution

bg (G54)
Wireless-G Broadband Router with SpeedBooster
Support	Support page
Wikipedia	Linksys routers
InfoDepot Wiki	Linksys WRT54GS v4.0
WikiDevi.wi-cat.ru	Linksys WRT54GS v4
3rd Party Firmware
dd-wrt	Supported
OpenWrt	Supported
Tomato any flavor	Supported
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	Linksys WRT54GS v4
Serial number prefix	CGN6
FCC ID	Q87-WT54GV40
Type	wireless router
Series	WRT54GS
CPU1	Broadcom BCM5352E
CPU1 Type	BMIPS3300
CPU1 Speed	200 MHz
Flash1 Chip	Brand? Model?
Flash1 Size	4 MiB4,194,304 B <br />32,768 Kib <br />4,096 KiB <br />32 Mib <br />0.00391 GiB <br /> (Parallel)
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	Brand? Model?
ETH chip1	Broadcom BCM5352E
Switch	Broadcom BCM5352E
Ethernet Port Count	1-100MbE-WAN 4-100MbE-LAN
Wired Standard	IEEE 802.3/3u
802dot11 OUI: 00:14:BF (10 E, 13 W), 00:16:B6 (8 E, 15 W) Ethernet OUI: 00:14:BF (10 E, 13 W), 00:16:B6 (8 E, 15 W)
Stock bootloader	CFE
Stock FW OS	Linux
Expansion IF types	none specified
Power	12 VDC, 1 A
Connector type	barrel
Other
Default IP address: 192.168.1.1 the IP 192.168.1.1 is used by 1324 additional devices of which 155 are Linksys devices Default login user: blank Default login password: admin blank:admin credentials used by 278 additional devices of which 135 are Linksys devices
Manuf/OEM/ODM	CyberTAN
3rd Party Firmware Support	Broadband-Hamnet , DD-WRT • (List) , OpenWrt • (List | Dev | DLs) , Tomato • (List | DLs) , TomatoUSB • (List | DLs)
Retail
FCC approval date	31 May 2005
Country of manuf	China
Radio 1
Chip1	Broadcom BCM5352E
Chip2	Broadcom BCM2050
Wireless interface OUI	00:14:BF,00:16:B6
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	9
FCC ID Linksys WRT54G v4 Q87-WT54GV40 Linksys WRT54G-RG 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 v5.0 Q87-WT54GV40 Linksys WRT54GS v5.1 Q87-WT54GV40
CPU1 brand Radio1 chip1 brand Radio1 chip2 brand Linksys WRT54GS v1.0 Broadcom Broadcom Broadcom Linksys WRT54GS v1.1 Broadcom Broadcom Broadcom Linksys WRT54GS v2.0 Broadcom Broadcom Broadcom Linksys WRT54GS v2.1 Broadcom Broadcom Broadcom Linksys WRT54GS v3 Broadcom Broadcom Broadcom Linksys WRT54GS v4 Broadcom Broadcom Broadcom Linksys WRT54GS v5.0 Broadcom Broadcom Broadcom Linksys WRT54GS v5.1 Broadcom Broadcom Broadcom Linksys WRT54GS v6.0 Broadcom Broadcom Broadcom Linksys WRT54GS v7.0 Broadcom Broadcom Linksys WRT54GS v7.2 Broadcom Broadcom

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

Wikipedia states that some of these devices have 8MB Flash and 32MB RAM.

See also: Linksys WRT54GS series

Links of Interest

WRT54G series on Wikipedia
Linksys WRT54Gxx page on the DD-WRT wiki
Linksys WRT54G, WRT54GL and WRT54GS page on the OpenWrt wiki

Flashing

Flashing dd-wrt

 

Supported by dd-wrt as of = ?

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

Flashing OpenWrt

On the OpenWrt Wiki
Support started version: ?
Current supported version: ?

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.

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

FCCID Q87-WT54GV40

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  WRT54G v4 w/ 2 dBi Ant

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  WRT54G v4 w/ 2 dBi Ant

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  WRT54G v4 w/ 5 dBi Ant

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  WRT54G v4 w/ 5 dBi Ant

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  WRT54G v4 w/ 7 dBi Ant

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  WRT54G v4 w/ 7 dBi Ant

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  WRT54G v4 w/ 7 dBi Ant

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  WRT54G v4 w/ 7 dBi Ant

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54GS v3 w/ 2 dBi Ant

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  WRT54GS v3 w/ 2 dBi Ant

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  WRT54GS v3 w/ 5 dBi Ant

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  WRT54GS v3 w/ 5 dBi Ant

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  WRT54GS v3 w/ 7 dBi Ant

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  WRT54GS v3 w/ 7 dBi Ant

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  WRT54GS v3 w/ 7 dBi Ant

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  WRT54GS v3 w/ 7 dBi Ant

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54G v4

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  WRT54GS v3

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  2 dBi Ant

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  2 dBi Ant

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  5 dBi Ant

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  5 dBi Ant

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  7 dBi Ant

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  7 dBi Ant

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  7 dBi Ant

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  7 dBi Ant

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  7 dBi Ant

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  7 dBi Ant

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  7 dBi Ant

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  Model: D12-1A

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  Model: D12-1A

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  Model: D12-1A

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  Model: D12-1A

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  Model: D12-1A

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  Model: D12-1A

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  Model: AM-1201000D41

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  Model: AM-1201000D41

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  Model: AM-1201000D41

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  Model: AM-1201000D41

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  Model: AM-1201000D41

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  Model: AM-1201000D41

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  WRT54GS v3 Label

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  WRT54G v4 Label

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  Other Label

Notes

Other Notes

The stock firmware from Linksys on the WRT54GS v4 won't accept a firmware image over 3MB in size (you will get the error: "Upgrade are failed!"(sic) if you try) so you will need to flash the mini version of DD-WRT onto the router BEFORE flashing the std or voip versions. (Remember to hold reset button for 30 sec after flashing mini version.)

[Comment added 10/07/07 by gatorback] V24 mini would not load: V23 mini wrt54gsv4.bin would load. After this success, V24 VPN generic (9/13/07) loaded successfully. Based on observations below, I recommend loading V23_mini_wrt54gsv4 first before loading the final target firmware.

[Comment added 11/01/06 by bigbloke of cownet.org] Today I purchased a 'GS V4 not having read this note previously. It flashed V23 standard perfectly first time from the specific file (dd-wrt.v23_wrt54gsv4.bin) therefore there may be some additional factors influencing this) - I hope this is useful feedback

[Comment added 12/01/06 by Mart] I just purchased a GS V4 too. After reading bigbloke's note, i decided to try skip the warning and directly flash V23 VPN from the (dd-wrt.v23_vpn_generic.bin) file without any problems too. I simply followed the "right way to flash" instructions step by step. Looks like the warning mentioned above does not apply with this version.

[Comment added 18/01/06 by Macks] I can second the above, just flashed a GSv4 from Linksys original and used dd-wrt.v23_vpn_wrt54gsv4.bin without problems, directly without going via the mini.

[Comment added 22/01/06 by JD] I can confirm the statement from Macks. Two days ago I bought also a 'GS v4' and I flashed it with the v23 standard without problems (directly without going via the mini)

[Comment added 19/02/06 by markusk] and i did it that way as well and after that got the weirdest behaviour of a router i've ever seen, mainly giving something like unstable wan-connection by going with high traffic over the router (be it via bittorrent, icq-filetransfers and similar).. unfortunately reflashing with mini and then a "big" one didn't help at all..

[Comment added 28/02/06 by mfb] Like Macks I flashed my 'GS v4' with v23 vpn direct, without mini first - working fine, no problems.

[Comment added 09/04/06 by zonk] I also can confirm the above statements of flashing two fresh bought WRT54GS v4 routers using the vpn version (v23) instead of the mini version. I used Firefox 1.5 and Opera 7.5 without any failed message. Both routers run stable.

[Comment added 04/06/06 by Yusuf Motiwala] I too can confirm that it can be upgraded directly to standard version. Even after reading this, I experimented upgrading my WRT54GSv4 directly with v23 SP1 standard image without any problem. May be stated limitation is firmware version dependent. At the time of upgrade, my linksys stock firmware version was 1.5.2.

[Comment added 13/09/07 by [hajj_3] DO NOT PUT FULL VERSION ON FIRST, i just did that and now my router is bricked:( make sure you do mini first guys!