Version overview

Graphic of a LANCOM product with gears and the lettering of LCOS, LCOS FX, LCOS LX, and LCOS SX

Current LCOS maintenance status

The free operating systems LCOS, LCOS SX, LCOS LX and LCOS FX are our in-house firmwares for the entire device portfolio of LANCOM Systems GmbH.

Software downloads

You will find the current LCOS release version as well as all active predecessor releases in our download portal. Simply enter your desired product and download the software free of charge!

To download the current LCOS FX release version, you can use the update function of your LANCOM R&S®Unified Firewall or go to the myLANCOM Firewall License Portal.

Tabular overview of the current LANCOM operating systems maintenance statuses

Current LCOS versions

Current LCOS SX versions

Current LCOS LX versions

Current LCOS FX versions

Note: New licenses or license renewals of LANCOM R&S®Unified Firewalls are only possible with LCOS FX 11.1 REL or higher from June 1, 2025. Therefore, please ensure that Unified Firewalls already in use are also updated to at least LCOS FX 10.11.

* Please Note: After the official end of life date of v9.6 and v9.8 (31st December, 2020), we can no longer guarantee feature quality and quantity. Especially for all UTM features, significant functional losses are to be expected due to the deactivation of signature and pattern updates and the discontinuation of communication with external partners (e.g. cloud services).

Compatibility with the LANCOM Management Cloud

To ensure continued smooth operation with the LANCOM Management Cloud, LANCOM devices with an old firmware version must be updated to a newer version. The following firmware versions are the minimum requirement:

  • at least LCOS 10.12.0147 SU3
  • at least LCOS FX 10.4
  • at least LCOS LX 5.20 Rel
  • at least LCOS SX 3.30.0417 RU3

To use all the functions of the LANCOM Management Cloud, we recommend using the latest release version.