In order to manually update the router firmware, you would be required to download the latest driver or firmware from the Linksys support site. To download the latest firmware version, follow the below set of instructions.
Make sure that you have an active internet connection. If your computer system is connected to the router but you are not able to visit the online website, test your connection by disconnecting the computer from your router and plug it directly to the cable or DSL modem. If you are still not able to access the online webpage, contact your Internet Service Provider for assistance with connection issues.
Once you are connected to the internet, go to the Linksys Support site and enter your Linksysrouter model number in Search by Product Name or Model Number field.
Click on the Downloads/firmware button. Now, scroll down the webpage and click on the Download software link.
Select the correct hardware version that matches your router device to display all the available downloads. Click on the Download link and save the file to a preferred location.
If the downloaded fie is a .zip extension file, you would need to unzip the same in order to continue with the further process.
You have now successfully downloaded the latest firmware version for your Linksys router.
Now, this file needs to be updated on the router by following the below instructions.
Login to the Linksys server account. Once you do, a web interface will open. Locate the Connectivity Menu and click on the same. If you do not possess a Linksys server account, you would need to create one.
Now, under the Basic Tab, in the firmware update section, click on Choose File button. Select the file that you have downloaded and click on Open. Click on the Start button on the next window that appears.
On the firmware update box, click on Yes. The router will start updating the firmware. It is important to note that while the firmware is getting updated, you do not turn off the router or close the browser window so as to prevent the existing firmware on your router from going corrupt.
A router reboot screen will pop up. Click OK to continue. The router firmware update process will take a few minutes.
On the Firmware Update complete screen, click OK.
Your router is now equipped with the latest firmware version.