6.4. Upgrading PSM

PSM appliances are preinstalled with a Long Term Support (LTS) release, it is recommended to upgrade to the latest LTS maintenance release as soon as possible. Each LTS release is supported for 3 years after original publication date, and for 1 year after the succeeding LTS release is published (whichever date is later). You are encouraged to upgrade to succeeding LTS releases.

Feature Releases provide additional features which are not yet consolidated to an LTS release. To gain access to these features, you may install a supported Feature Release on the appliance, with the following conditions:

  • You cannot roll back to an LTS release from a Feature Release.

  • Feature Releases are released and supported in a timeline of 6 months. You have to keep upgrading PSM to the latest Feature Release to ensure that your appliance is supported.

For both LTS and Feature Releases, Balabit regularly incorporates security patches and bugfixes, and issues updated Revisions of the released product. We strongly recommend always installing the latest Revision of the used software Release.


Downgrading from the latest Feature Release, even to an LTS release, voids support for PSM.

The following sections describe how to keep PSM up to date, and how to install a new license: