The following table highlights supported upgrade paths to upgrade to Release 14 of Cisco Unified Communications Manager and the IM and Presence Service. It also lists the upgrade paths that require COP files. You must install COP files on each node before you begin an upgrade using the Cisco Unified OS Admin interface, or before you begin an upgrade or migration using the Prime Collaboration Deployment (PCD) tool. If you are using PCD, you can perform a bulk installation of the COP files before you begin the upgrade.