How to upgrade firmware on Router

I have a linksys wireless g WR54G router. I also have the firmware installed,now i wanted to upgrade my firmware on the Router so it will check every site on the gateway itself, so please anyone knows how to upgrade firmware please let me know.

Thnaks in Advance...

tftp is built into the system. You don't need to find firmware updates or rush to upgrade for the mac am not sure about the windows. After all you need to download the upgrade from linksys and till date updates are not there for firmware.

Please check the following link:
http://static.macmegasite.com/old_ar...002/11/18/#461

1. Go to this Linksys download page, choose your wireless router product. The one you are looking for is wireless router WRT54G.
   
2. On the wireless product download page, select the existing firmware version of the router, then proceed to download the latest firmware. For the example here, I select version 1.0.
   
3. After successful firmware download, You have to log on to router management page, then please click on Administration tab and proceed to select Firmware Upgrade, do file browsing to select the downloaded firmware and click on Upgrade button to do firmware upgrade.
   
4. I would also advise you to backup the existing configuration by going to Administration > Config Management -> press Backup button