This section is under construction.
Custom code updates to the latest Liferay DXP/Portal 7.x versions are done the same way as updates to 7.2. The Liferay Upgrade Planner is still the recommended way to upgrade custom development. It identifies your code that’s affected by breaking changes (from 7.2, 7.3, and 7.4) and offers to automatically adapt your code to many of the changes.
If you’re upgrading a language key override to 7.4+, follow the language key override upgrade instructions first.