Use the following steps for updating ownCloud:
* Catalogue all applications active in the current ownCloud instance. Take special care to identify the "core" applications that were activated and third party applications that were installed. There is no guarantee that third party applications will work on a new ownCloud release.
* Review and document all ownCloud sharing techniques used in the current ownCloud instance.
* Do backups of the ownCloud database, binaries and stored files.