Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Manage Device Firmware

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/adminGd/cucm_b_administration-guide-15/cucm_b_test-adminguide_chapter_0110.html

Published

2026-08-31

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• The Bulk Administration Tool can set the firmware load for many phones using a CSV file or a query. in context
• A firmware COP file installed on the Unified CM publisher contains both the firmware files and database updates, so installing it also updates the default firmware for the affected models. in context
• Installing new firmware updates the phone-model device default to the new version, and Cisco recommends setting the default back to the previous load if the organisation is not ready to upgrade phones. in context
• Loads deleted through Device Load Management cannot be restored without a DRS restore of the entire cluster. in context
• System-wide default firmware per phone model is set in Cisco Unified CM Administration at Device > Device Settings > Device Defaults. in context
• In Unified CM, device loads are the software and firmware for devices such as IP phones and telepresence systems that are provisioned by and register to Unified CM. in context
• Some models, such as the DX family of Cisco TelePresence devices, support only HTTP for firmware updates. in context
• Cisco releases updated device firmware to add features and fixes independently of Unified CM software upgrades. in context
• Device packs and firmware COP files are installed from Cisco Unified OS Administration under Software Upgrades > Install/Upgrade. in context
• A third-party load server must be able to serve any file the phone requests over HTTP on TCP port 6970 (preferred) or over UDP-based TFTP. in context
• A load server may be another Unified CM or a third-party server. in context
• The Release 15 Manage Device Firmware chapter describes no time-based firmware push scheduler; when phones upgrade depends on when they are reset after the load is assigned. inferred in context
• Device > Device Settings > Firmware Load Information lists, by device type, the devices that are not using the default load. in context
• For an individual phone, the Phone Load Name field on the Phone Configuration window overrides the model's default firmware load. in context
• Cisco notes that a new load can be applied to a single device before it is configured as the system-wide default. in context
• Unused firmware can be removed through the Device Load Management window in Cisco Unified OS Administration. in context
• Devices obtain new firmware only after they are reset, so installing a load does not by itself upgrade registered phones. in context
• For Unified CM 12.0(1)SU2 and later, the install procedure also calls for restarting the Cisco CallManager service on the publisher, a step that can be skipped when that service runs only on subscribers. in context
• After installing a device pack or firmware, the Cisco TFTP service must be restarted on every node where it runs. in context
• The Release 15 install procedure includes restarting the Cisco Tomcat service on all cluster nodes after installing a device pack. in context
• The TFTP server is the primary firmware download location for Unified CM-registered devices, and alternate download locations called load servers are also supported. in context
• Firmware delivered as a zip file rather than a COP file must be extracted and its files uploaded manually to the TFTP directories. in context

Cite this source record

APA

WarmTransfer. (2026, August 31). Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Manage Device Firmware. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-admin-15-manage-device-firmware

BibTeX

@misc{warmtransfer-cisco-cucm-admin-15-manage-device-firmware,
  title  = {Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Manage Device Firmware},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-admin-15-manage-device-firmware},
  note   = {Cisco Systems, accessed 2026-09-25}
}