Install the latest version
Log on to LibreELEC via SSH and execute the following command:
curl -sSL https://releases.hyperion-project.org/install | bash
Update to the latest version
1) Log on to LibreELEC via SSH and remove the current version via following command:
curl -sSL https://releases.hyperion-project.org/install | bash -s -- --remove
2) Install the latest version, see above.
Note: Your configuration database will not be deleted.
Nevertheless, it is advised to export the configuration as a backup.