Download Epson L455/L456 GNU/Linux Driver
On Firefox prompt if possible Select directly “Open with Software Install”!
Or with Chrome Click on Bottom’s Button, otherwise Double-Click on it in the File Manager.
Next follow with CentOS Epson L455/L456 Driver Installation
Click on “Install”:
Then Authenticate with your Admin Password to Start the Installation process:
In a Short Time the Software should be Successfully Installed!
Or if you prefer from Terminal execute:
sudo dnf ~/Download/epson*.rpm
For CentOS 7 instead:
sudo yum ~/Download/epson*.rpm
But if you are in Trouble to Find the Location on Terminal then See: How to Access Downloads Folder from Browser.