.. _upgrade-guide-with-delta-bundle:

Upgrade Guide with Delta Bundle
################################

.. _19.3.2|EKB-3853:

.. important::

   * When upgrading from any of the following versions, first obtain and apply the patch corresponding to your
     version from the VOSS secure FTP site:

     * 19.1.2 - ``/software/patches/19.1.2/Recommended_Patches/EKB-3853-19.1.2_patch``
     * 19.2.1 - ``/software/patches/19.2.1/Recommended_Patches/EKB-3853-19.2.1_patch``
     * 19.3.1 - ``/software/patches/19.3.1/Recommended_Patches/EKB-3853-19.3.1_patch``
   * When upgrading to 19.3.2, first obtain and apply the patch from one of the following:
   
     * VOSS secure FTP site:
   
       ``/software/patches/19.3.2/Pre Upgrade Patches/EKB-4769_patch``
     * Customer Portal:

       ``/downloads/VOSS-4-UC/19.3.2/Patches/Pre Upgrade Patches/EKB-4769_patch``
       

.. note::

   Normal operations will be interrupted during an upgrade. Carry out the upgrade in a maintenance
   window. Refer to the type of upgrade for details on the upgrade duration.



*****************
Multinode Upgrade
*****************

.. toctree::
   :maxdepth: 2

   /src/user/install/multinode-upgrade-Delta
   /src/user/install/multinode-upgrade-18.1.3-to-19.3.2

   
*******************
Standalone Upgrade
*******************

.. toctree::
   :maxdepth: 2

   /src/user/install/upgrade-cucdm-Delta