Alternatively, you can replace your device firmware with DD-WRT – a Linux-based open source firmware that is designed to enhance security and performance of wireless Internet routers.

Security conscious people always prefer DD-WRT firmware over their factory default firmware, which is compatible with many router models from popular manufacturers such as LinkSys, Cisco, Netgear, Asus, TP-Link, D-Link and more.

DD-WRT has a ton of features – it improves your wireless signal, as well as unlocks your router's potential to manage network traffic, static routing, VPN, repeating functions and more.

To check if your router is compatible with DD-WRT, head on to 'DD-WRT database' and search for your router model number.
dd-wrt-firmware-install

If it's there and supported, then download it and follow below-mentioned general steps to install it:
-Log into your router's admin page (usually h t t p://192.168.1.1/
-Go to the Admin section and choose "Firmware Upgrade."
-Choose "Select File" and find your DD-WRT firmware.
-Upload it and do not unplug or do anything to the router until it finishes updating.

Note: Changing your router's firmware with a non-compatible firmware can brick your router. So be very careful.