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Firmware Release Candidates

On the following pages you can download our latest release candidates for testing purposes.

Release candidates are not public releases. They have been tested only automatically, but have not passed our complete manual QA test run. Please always read the change log first. Then install the firmware on phones in a test environment before you roll it out to multiple productive devices.

Desk Phones

Latest firmware version D-Series - V10

Wireless DECT Devices



Public Announcement System

To download older firmware versions, please visit our firmware archive.