How To Upgrade OwnCloud?
It is strongly recommended to create a backup before starting the update process. If you have important data, create and try to restore a backup to ensure that everything works properly.
Upgrading From The OwnCloud Admin Panel
ownCloud already has an “Updater” installed that allows upgrading the ownCloud application from the admin panel directly. For security reasons, ownCloud files do not have write access for the web server user, but this will be required if you want to upgrade the application.
Before running the “Updater” app, run the following commands to change the owner of the files in your installation:
sudo chown -R daemon /opt/bitnami/apps/owncloud/htdocs sudo chmod 644 /opt/bitnami/apps/owncloud/htdocs/.user.ini
Run the upgrade process from the admin panel by navigating to “Admin -> Update center” and running the upgrade process.
If the upgrade works well, restore the permissions of your folder.
sudo chown -R bitnami /opt/bitnami/apps/owncloud/htdocs sudo chmod 444 /opt/bitnami/apps/owncloud/htdocs/.user.ini sudo chown -R daemon /opt/bitnami/apps/owncloud/htdocs/config /opt/bitnami/apps/owncloud/htdocs/apps
You should now be able to access your new ownCloud application.