How to Install AEM service pack?

To install the service pack on an Adobe Experience Manager 6.5 instance, follow these steps: 

1. Restart the instance before installation if the instance is in update mode (and this is the case when the instance was updated from an earlier version). Adobe also recommends a restart if the current uptime for an instance is high. 
2. Before installing, take a snapshot or a fresh backup of your Experience Manager instance. 
3. Download the latest service pack or service pack that you want to install from Software Distribution. 
4. Open Package Manager and click Upload Package to upload the package. To know more, see Package Manager. 
5. Select the package and click Install. 

Validate installation 

The product information page (/system/console/productinfo) displays the updated version string Adobe Experience Manager (6.5.8.0) under Installed Products. 

All OSGi bundles are either ACTIVE or FRAGMENT in the OSGi Console (Use Web Console: /system/console/bundles). 

The OSGi bundle org.apache.jackrabbit.oak-core is version 1.22.3 or later (Use Web Console: /system/console/bundles)