To upgrade a WHM/cPanel Linux server to the EDGE release, you can use the following steps:
Log in to WHM as the root user.
Go to the "Upgrade to Latest Version" page under the "Server Configuration" menu.
In the "Upgrade to Version" section, select the "EDGE" release from the dropdown menu.
Click the "Upgrade" button.
Review the warning message and click the "Upgrade Now" button to confirm the upgrade.
Wait for the upgrade process to complete. This may take several minutes or longer depending on the size of your server and the number of packages being upgraded.
After the upgrade is complete, you may need to restart some services or reboot the server for the changes to take effect.