Upgrade WHM / cPanel Linux server to EDGE Virtuozzo Optimized release

Q. How do I upgrade my CentOS Linux 5.0 dedicated server to WHM / cPanel edge release?

A. You can upgrade to EDGE release from WHM manager. Please 
note that Edge is the bleeding edge tree. While it has the newest features; It has undergone the 
least amount of testing (if any). You generally shouldn't run this build unless you need a bug fix 
or feature in it. Once an equivalent CURRENT or RELEASE build has been released, you should switch away from this.


 
Configure EDGE upgrade
a] Just login to WHM

b] Look for Server Configuration

c] Click on Update Config

d] Set cPanel/WHM Updates option to Manual Updates Only (bleeding EDGE tree)

e] Click on Save.

 
To start upgrade procedure
Look for cPanel

Click on Upgrade to Latest Version

Click on Click Upgrade button
Edge upgrade from a shell or command prompt
Login as the root via ssh. Edit /etc/cpupdate.conf file:
# vi /etc/cpupdate.conf
Find line
CPANEL=stable
Replace with:
CPANEL=manual-edge
Save and close the file. Now update to edge:
# /scripts/upcp -- force