Updating firmware linksys router
To update your router, you must download the latest firmware from the Linksys website and then log in to your router's Web-based administration panel to upload and install the file.
The firmware embedded in your range extender implements networking and security protocols on the device.
Note: Some router models vulnerable to The Moon are no longer supported by Linksys and haven't been issued any firmware updates.
Linksys says it will soon release firmware updates for all affected products, including models no longer sold.
If you're using an older Linksys E-series router and have trouble finding a firmware upgrade, you may have to wait a few weeks. In the search box under "Start Here," type the model number of your router.
You can find the model number on the underside of your router.
Community Q&A Cisco, the manufacturer of Linksys routers, provides periodic firmware updates for all products covered under the terms of support.