How to upgrade from NGL3.0.4 R2 U1 to NGL3.1.2?

Posted by DIBAL on Mar 21, 2018; 10:27am
URL: http://ngl.70.s1.nabble.com/How-to-upgrade-from-NGL3-0-4-R2-U1-to-NGL3-1-2-tp7577287.html

What are the procedure to upgrade from NGL3.0.4 R2 U1 to NGL3.1.2?
I have already downloaded the upgrade package.