If you’re already using Liferay Dev Studio but must update your environment, follow the steps below:
In Dev Studio, go to Help → Install New Software….
In the Work with field, copy in the URL http://releases.liferay.com/tools/ide/latest/stable/.
You’ll see the Dev Studio components in the list below. Check them off and click Next.
Accept the terms of the agreements. Click Next, and Dev Studio is updated. You must restart Dev Studio for the updates to take effect.
You’re now on the latest version of Liferay Dev Studio!