Source note · Troubleshooting Cisco IP phones stuck upgrading firmware
Beginning with Unified CM 14.0, all phone loads must use the SHA512 hashing algorithm and the file name must end in .cop.sha512.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- device firmware
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 14.0 and later
- Checked
- 2026-10-02
Sources
- Cisco IP Phone 8800 Release Notes for Firmware Release 14.0(1) — Cisco Systems · tier 2 current vendor documentation · Install the Firmware Release on Cisco Unified Communications Manager
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Cisco IP phones stuck upgrading firmware: source note cucm-phone-firmware-upgrade-troubleshooting-sha512-cucm14. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-upgrade-troubleshooting-sha512-cucm14
BibTeX
@misc{warmtransfer-claim-cucm-phone-firmware-upgrade-troubleshooting-sha512-cucm14,
title = {Troubleshooting Cisco IP phones stuck upgrading firmware: source note cucm-phone-firmware-upgrade-troubleshooting-sha512-cucm14},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-upgrade-troubleshooting-sha512-cucm14},
note = {Source note cucm-phone-firmware-upgrade-troubleshooting-sha512-cucm14, checked 2026-10-02}
}