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  1. BlackBerry Docs
  2. BlackBerry UEM 12.10
  3. BlackBerry UEM Installation and Upgrade
  4. Installation and upgrade
  5. Installing or upgrading the BlackBerry UEM software
  6. Upgrade a domain that consists of multiple instances of BlackBerry UEM

Upgrade a domain that consists of multiple instances of 
BlackBerry UEM

During the first stage of the upgrade, you can set the start.windows.services parameter in the deployer.properties file to false when you upgrade each instance so that the services do not start automatically and you can proceed to the second stage.
If the recommended upgrade path is to upgrade 
BlackBerry UEM
 versions in stages, then you must upgrade all instances to the first stage, restart them and upgrade them all to the second stage. For example, if you are running 
BES12
 version 12.5, you must upgrade all instances to 
BlackBerry UEM
 version 12.7 before you upgrade them to 
BlackBerry UEM
 version 12.9. After you upgrade the instances to version 12.7, synchronize the environment, restart the instances and upgrade them to 
BlackBerry UEM
 version 12.9. 
  1. Shut down all instances of 
    BlackBerry UEM
     in the domain.
    If you are upgrading from 
    BlackBerry UEM
     version 12.8.1 or version 12.9.1, you do not have to shut down any instances of 
    BlackBerry UEM
     to upgrade them.
  2. Upgrade one 
    BlackBerry UEM
     core instance to 
    BlackBerry UEM
     version 12.10. 
    The setup application also backs up and upgrades the 
    BlackBerry UEM
     database. After the upgrade, the 
    BlackBerry UEM
     instance starts automatically.
  3. Upgrade the other 
    BlackBerry UEM
     core or management console instances. 
  4. Upgrade any 
    BlackBerry Connectivity Node
    -only instances (that contain only the device connectivity components) last.