When you install new software on the controller, all controlled APs are automatically synchronized to the same version that is installed on the controller.
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CAUTION:
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Before updating, be sure to check for update issues in the release notes.
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Even though configuration settings are preserved during software updates, HP recommends that you backup your configuration settings before updating.
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At the end of the update process, the controller and all controlled APs automatically restart, causing all users to be disconnected. Once the controller and APs resume operation, all users must reconnect. To minimize network disruption, use the scheduled install option to have updates performed outside of peak usage hours.
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![[CAUTION: ]](images/caution.gif)