Are you registering them to an or to the Webex Cloud ?
Note: As this firmware is no longer officially supported, the process is largely considered "at your own risk" by the user community. 4. The Importance of syn213b vs syn213 dx80.ce8.2.0-syn213b.rel.pkg
Support for modern encryption standards and secure boot processes to protect executive communications. Are you registering them to an or to the Webex Cloud
To use this package, you generally follow the Cisco DX600 Series Conversion Guide. Note these critical requirements: dx80.ce8.2.0-syn213b.rel.pkg