Source note · Troubleshooting Cisco IP phones stuck upgrading firmware
After installing a device pack or firmware, restart the Cisco TFTP service on every node where it runs.
Checked 2026-10-02
Restart the Cisco TFTP service on all nodes where the service is running
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- TFTP
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15 and SUs
- Checked
- 2026-10-02
Sources
- Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Manage Device Firmware — Cisco Systems · tier 2 current vendor documentation · Install a Device Pack or Individual Firmware
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Cisco IP phones stuck upgrading firmware: source note cucm-phone-firmware-upgrade-troubleshooting-restart-tftp-all. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-upgrade-troubleshooting-restart-tftp-all
BibTeX
@misc{warmtransfer-claim-cucm-phone-firmware-upgrade-troubleshooting-restart-tftp-all,
title = {Troubleshooting Cisco IP phones stuck upgrading firmware: source note cucm-phone-firmware-upgrade-troubleshooting-restart-tftp-all},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-upgrade-troubleshooting-restart-tftp-all},
note = {Source note cucm-phone-firmware-upgrade-troubleshooting-restart-tftp-all, checked 2026-10-02}
}