How to update Plesk Obsidian to the latest build

Applicable to:

How to update Plesk Obsidian to the latest build?

Updating Plesk Obsidian via interface

In Plesk, go to Tools & Settings and click Updates.

Note: Plesk Installer works on port 8447. If this port is filtered by a firewall and cannot be opened for some reason, refer to the command-line instructions.
On the Updates page, click Update Components.
Click Continue to begin the update procedure.

Updating Plesk Obsidian via a command-line interface

Connect to a Plesk server via SSH (Linux) / RDP (Windows Server).
Run Plesk Installer to list the latest available build (on Windows Server, use a command prompt as an Administrator):

MYSQL_LIN: plesk installer upgrade
...
prod_id release_id (description) (tiers)
panel PLESK_18_0_25 (Plesk Obsidian 18.0.25) (release)
panel PLESK_18_0_23 (Plesk Obsidian 18.0.24) (currently installed)
Start the upgrade using the release_id:

MYSQL_LIN: plesk installer upgrade PLESK_18_0_25

OR
Perform upgrade with one command:

# plesk installer --select-release-latest --upgrade-installed-components

During the update operation: