1. ALWAYS create a backup of your configuration and data before a firmware upgrade.
2. If downgrading from firmware version 184.108.40.206+ to 220.127.116.11 or lower, users must factory reset the UCM and restore a backup created on the corresponding lower version to minimize potential issues from the downgrade. Please note that restoring a backup created on 18.104.22.168+ to a UCM on 22.214.171.124 or lower may cause abnormal system behavior.
3. For UCM6xxx on firmware earlier than 1.0.20.x, please upgrade to 126.96.36.199 first, then upgrade to 1.0.20.x. To upgrade to 188.8.131.52, please check 184.108.40.206 release note “Important Upgrading Note” section and follow the instructions.
4. It is recommended to upgrade UCM to latest firmware for product lifespan and security improvements.
Download UCM6510 Firmware Files:
Previous Firmware Files:
UCM6510 220.127.116.11: Firmware File
UCM6510 18.104.22.168: Firmware File
UCM6510 22.214.171.124: Firmware File
UCM6510 126.96.36.199: Firmeware File
UCM6510 188.8.131.52: Firmware File
UCM6510 184.108.40.206: Firmware File