Wiring Pi Install:

Raspberry Pi 3B+:

cd /tmp
wget https://unicorn.drogon.net/wiringpi-2.46-1.deb
sudo dpkg -i wiringpi-2.46-1.deb

Raspberry Pi 4: 

cd /tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb

To Check WiringPi Version:

gpio -v

If You Need To Uninstall The Preinstalled WiringPi:

sudo apt purge wiringpi