This is caused by the firmware not loading correctly. Follow the steps below to fix this:
Note: This process must be done on a computer plugged into the router directly.
1. You first need to establish a connection to the Internet and download firmware for your router. To get
online, bypass the router and plug directly into your Cable or DSL modem.
2. Download the latest firmware upgrade for your router from http://www.linksys.com/download. Be sure to
select the WRT54G and the correct version number that matches your router. Look on the bottom of
the router to verify the model and version (no version number means version 1.0).
3. Click on Downloads for this Product. When the Downloads page loads, click on the Firmware button.
4. Download the firmware Auto Upgrade Utility .exe file from this page.
5. Before performing the upgrade, we recommend that you do the following:
· Assign your computer a static IP address. For more information, please see Article Answer ID 534 for information on setting up a static IP address in Windows. · If using a 10/100 network adapter, change its speed to 10Mb, half duplex. Please see the instructions below on how to do this. Windows 95/98/ME
1. At the Windows desktop, click on Start then choose Settings and click on Control Panel.
2. Double click the Network icon. This will bring up the “Network Configuration” window.
3. Locate and highlight the icon with the green logo for your network adapter and click Properties.
4. This will display the network adapter's Properties.
5. Select the Advanced tab and click Connection Type (this may also appear as Media Type, Connection
Speed, Mode, Link Speed, etc). The current default value should be set to "Auto sense" or "Auto".
6. Change the value of this option to 10Base-t, half duplex mode (usually the lowest possible option). The wording
of this value may also vary, depending upon the make and model of the Network Adapter. Other possibilities
include 10T half, 10Mb half duplex, 10Mbps half, etc.
7. Once this has been changed, click OK to return to the Network configuration screen.
8. Click OK again and Windows will ask to restart your computer. Click “Yes” to restart. Windows 2000/XP
1. Go to Start click on Run and type in control ncpa.cpl .
2. Double click on the Local Area Connection that controls your network card.
3. Click Properties under Local Area connection status.
4. Click the Configure button. Then, click on the Advanced Tab.
5. Click Connection Type (this may also appear as Media Type, Connection Speed, Mode, Link Speed, etc).
The current default value should be set to "Auto sense" or "Auto".
6. Change the value of this option to 10Base-t, half duplex mode (usually the lowest possible option). The wording of
this value may also vary, depending upon the make and model of the Network Adapter. Other possibilities include
10T half, 10Mb half duplex, 10Mbps half, etc.
7. Click OK after you made the change then click Close. Reloading the firmware
1. First, hold the reset button located on the back of the router for 30 seconds.
2. Next, to test communication between the Router and the network card: Go to Start, and select
Run. Type in command and press [Enter]. This will bring up the MS-DOS prompt window.
3. Type ping 192.168.1.1 and press [Enter].
4. You should get the following results: Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.1: bytes=32 time<10ms TTL=128
Reply from 192.168.1.1: bytes=32 time<10ms TTL=128
Reply from 192.168.1.1: bytes=32 time<10ms TTL=128
Reply from 192.168.1.1: bytes=32 time<10ms TTL=128
5. Once you get these replies, close out of the command prompt by typing in exit and pressing [Enter].
6. Double click on the firmware file that you downloaded in Step 2. The “Firmware Upgrade Utility” will open.
7. Click Next and type in the routers “IP Address” (192.168.1.1 is the default address of the router) and type
in the Router’s Password” (admin is the default password for the router).
8. Once you confirm the settings (click Next), click Upgrade to start the firmware upgrade process. The upgrade
will take about 1 to 2 minutes.
9. Once the upgrade is complete, the router's Diag light (or Power light) should no longer be blinking.
Note: Be sure to go back to your network card settings (from the steps above) and change the speed of the link back to “Auto sense” or “Auto” (the original default setting) to restore full speed to the adapter.
If any of the steps do not work, or if you are having other difficulties, please contact Linksys Technical Support for further assistance. | 
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