Source note · Troubleshooting Cisco IP phones stuck upgrading firmware
After the COP install changes the default, the technote restores the old default in Device Defaults (using Swap Loads) so that other phones of that model stay on the old load.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- device firmware
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Upgrade IP Phone Firmware Individually — Cisco Systems (TAC) · tier 2 current vendor documentation · Configure, Steps 4-5
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Cisco IP phones stuck upgrading firmware: source note cucm-phone-firmware-upgrade-troubleshooting-swap-loads. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-upgrade-troubleshooting-swap-loads
BibTeX
@misc{warmtransfer-claim-cucm-phone-firmware-upgrade-troubleshooting-swap-loads,
title = {Troubleshooting Cisco IP phones stuck upgrading firmware: source note cucm-phone-firmware-upgrade-troubleshooting-swap-loads},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-upgrade-troubleshooting-swap-loads},
note = {Source note cucm-phone-firmware-upgrade-troubleshooting-swap-loads, checked 2026-10-02}
}