How can you update an installed version of PostgreSQL to the latest release?

Updating PostgreSQL to the latest version typically involves the following steps:

1. Back up all databases (for example, using pg_dumpall or pg_basebackup).
2. Install the new version of PostgreSQL via your OS package manager or compile from source.
3. Stop the current PostgreSQL server.
4. Migrate data using the pg_upgrade tool or restore from a backup.
5. Start the new server and verify its functionality.

It is important to carefully read the official upgrade documentation for your version, as there may be specific features and incompatibilities between versions.

Example of a backup command:

pg_dumpall > backup.sql

Example of running pg_upgrade requires specifying paths to the old and new installations and data.