.. yk5-overview-5.4.x.rst .. _firmware-label: =================================================== Firmware Overview =================================================== YubiKey 5 Series ================ The new 5.7. firmware for the YubiKey 5 Series has a number of new and improved features that will be available for the first time on the multi-protocol YubiKey 5. The changes and additions are described in detail in :ref:`5.7-fw-specs`.In addition to the features that are directly accessible, there are a number of features that require partner support. .. include:: includes/firmware-overview.rst The features, capabilities, and enhancements of the YubiKey 5 Series that are dependent on firmware version are listed below in the :ref:`Firmware Capability Matrix ` below. .. _sky-ent: Security Key Series =================== The Security Key Series - including Enterprise Edition - will be updated with the latest firmware, including the updates from FIDO listed above. The Enterprise Edition will have the following additional updates: * Minimum PIN length set to 6 * PIN Complexity turned on by default (and cannot be turned off) * Serial number retrievable by client software in Windows without requiring elevated privileges (admin rights) since the YubiKey management application is accessible via CCID, which enables use cases where client software needs to read the serial number of the authenticator. .. _fw-capability-matrix: .. include:: includes/history_separated.rst ---------- Click for `Yubico Support `_.