https://www.dell.com/support/kbdoc/en-us/000022755/dell-emc-unity-how-to-upgrade-dell-emc-unity-oe-code-user-correctable
Dell Unity: How to upgrade the Unity Operating Environment (OE) (User Correctable) | Dell US
This article explains two methods of upgrading the Unity OE: Unisphere UI and Command Line (uemcli)
unity how to