# Upgrading a Single Booster

## What

The Booster upgrade feature gives FileWave administrators a centralized way to upgrade Boosters from within FileWave.

## When/Why

Having to use SSH or remote control for every Booster upgrade takes too much time. Starting with FileWave 14.4, the **Boosters** and **Booster Details** tabs provide a manual upgrade action when an applicable upgrade is available. Starting with FileWave 16.3.0, compatible outdated Boosters can also be scheduled automatically after a FileWave Server upgrade. The default delay is seven days. On FileWave 16.3.x, change it in **FileWave Central > Preferences > General**. Starting with FileWave 16.4.0, the setting is in **FileWave Central > Preferences > Upgrades**. Make the change before upgrading the Server. A value of **0 days** schedules eligible Boosters immediately. The value is evaluated when the Server upgrade creates the Booster schedule; changing it afterward does not retroactively move already scheduled work.

<p class="callout info">**FileWave 16.4 makes automatic Booster upgrades more resilient.** FileWave now checks both the reported upgrade status and the installed Booster version before treating an upgrade as complete. A failed attempt can be retried automatically within defined limits, and the attempts are logged. If the Booster remains below the target version or reports **Failed** after the automatic retries, investigate the logs and manually schedule the upgrade again.</p>

Some criteria used to determine whether an applicable upgrade is available are:

- Booster has to be at least 14.4
- The operating system version has to be supported by the target version
- The booster has to be running in order to trigger an upgrade
- The version number of the target version has to be higher than the currently installed version (i.e you cannot use this feature to reinstall/downgrade to a specific version)

This article discusses manually upgrading a single Booster immediately. In FileWave 16.3.0 and later, this is especially useful when you do not want to wait for the automatic post-Server-upgrade schedule or when you want to handle one Booster separately.

## How

To upgrade a particular booster, just right-click it and select "Upgrade Booster". You can also right-click the booster in the "Booster Details" tab.

[![Upgrade Booster.png](https://kb.filewave.com/uploads/images/gallery/2023-06/scaled-1680-/r3ScZN0RXRq9tPD8-upgrade-booster.png)](https://kb.filewave.com/uploads/images/gallery/2023-06/r3ScZN0RXRq9tPD8-upgrade-booster.png)