There are two distinct steps to doing a full upgrade:
- In-Place Upgrade: Drop in the new jar file in place of the original one in your <aem-install> directory, right next to your existing crx-quickstart directory) and launch it. This upgrades the system, but leaves the existing CRX 2 repository as-is.
- Migrating the Repository to Oak: Once the in place upgrade is complete, you can optionally migrate the existing CRX 2 repository to the new Jackrabbit Oak-based CRX 3 repository.