Upgrading WebSphere Application Server Liberty Base

This is an optional step you might want to perform before you upgrade the Dynamic Workload Console and the master components.

To upgrade WebSphere Application Server Liberty Base, perform the following steps:

Find out which version of WebSphere Application Server Liberty Base is required, by running the Detailed System Requirements report and browsing to the Prerequisites tab.
Download WebSphere Application Server Liberty Base from Recommended updates for WebSphere Application Server Liberty.
Stop the application server by running the stopAppServer command, as explained in Application server - starting and stopping.
Optionally rename the current WebSphere Application Server Liberty Base folder, if you plan to keep it for backup purposes.
Extract WebSphere Application Server Liberty Base to the same folder where the previous version was installed, as follows:
On Windows operating systems
```
java -jar <liberty_download_dir>\wlp-base-all-<version>.jar --acceptLicense <install_dir>
```
On UNIX operating systems
```
./java -jar <liberty_download_dir>/wlp-base-all-<version>.jar --acceptLicense <install_dir>
```
where:

<liberty_download_dir>

The directory where you downloaded WebSphere Application Server Liberty Base.

<version>

The number of the version.

<install_dir>

The directory where you want to set up WebSphere Application Server Liberty Base.
Start the application server by running the startAppServer command, as explained in Application server - starting and stopping.