To upgrade the firmware on your router, please go through the following steps.
Step 1. Download the latest firmware and unzip the files to a folder on your computer that you can locate them easily. (If you can't unzip the files, you may need WinZIP for Windows, or StuffIt for Mac)
Step 2. Once you've downloaded and unzipped the firmware, open a web browser such as Internet Explorer or Netscape and enter the IP address of your router (192.168.1.1).
Step 3. The default username is admin (all lower case) and the default password is admin (all lower case). Click Login.
Step 4. Click on the Tools tab and then the Update Gateway button on the left side. Click on the Browse button and browse to the FS file you unzipped in Step 2. Highlight the file by clicking on it once and click Open.
Step 5. Click Update Gateway button. It will start copying the files across. Once the file has gone through and the unit has rebooted login again.
Step 6. Now click on the Browse button again and browse to the Kernel file you unzipped in Step 2. Highlight the file by clicking on it once and click Open.
Step 7. Click Update Gateway button. Once the upgrade has finished the unit will reboot. Once the unit has been rebooted and you are logged in go to Tools and update gateway. The current firmware version should now show the new version of the firmware.
Step 8. The router may need to be factory reset before use. Disconnect the power to the router, then plug it back in and wait 20 seconds. Then, hold the Reset switch on the back for 10 seconds. Then you can configure the router as per your requirements. Once everything is configured,plug in the ADSL line.