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Release Notice: LoadMaster LMOS LTS

Release Notice: LoadMaster LMOS LTS

Release Date: 17th February 2022


Update Image Verification:

By default, verification of the digital signature on upgrade images is required in LMOS 7.2.50 and above. See the Update Verification Options setting under System Administration > Miscellaneous Options > WUI Settings. If the unit you are upgrading is set to require validation, you'll need to supply the XML Verification File supplied with this release.

Note that:

  • In previous releases, two verification files were provided: one for pre-7.2.51 systems and one for later systems. This restriction has been removed with this release; use the same XML file regardless of the LMOS version from which you are upgrading.
  • LoadMasters running an LMOS version prior to 7.2.49 do not provide the option of XML file verification in the UI or API. If you are upgrading from one of these releases to this release, you can verify the digital signatures offline using a manual process documented on the support website.

If you are currently running LMOS 7.1.x or an earlier version, please see the article Kemp LoadMaster Firmware Upgrade Path for full upgrade path information.


Issues Resolved:

This is a minor update to the LoadMaster LTS (Long Term Support) release, focused primarily on addressing an internal error that caused an unexpected system panic and reboot when Virtual Service connections are dropped as new connection requests are being processed. This error is seen only under very specific circumstances that to date have been seen by very few customers; nevertheless, the LoadMaster team believes this error to be serious enough to warrant an update to the LTS release.

Two other updates to the API were also picked up for this release:  

  • The ability to get, set, and remove the OCSP port value has been added to both the PowerShell and RESTful APIs.
  • Fixed a bug that prevented cloud HA Mode from being set via the API for both AWS and Azure public clouds.


Download Links:

Download Current LTS Version -


Recommended Reading:

For full details on all the firmware updates, consult the LoadMaster Release Notes

To get the latest firmware updates please visit our Firmware Downloads page.


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