Source note · Unified CM backup and upgrade
A cluster on 11.5 or earlier cannot use switch version to go back if a move to Release 15 fails, because its only paths to 15 are migrations or a fresh install, and version switching is not supported for migrations.
inferred · Checked 2026-09-24
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- switch version
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 11.5 and earlier sources; 15 destination
- Status
- inferred
- Checked
- 2026-09-24
Sources
- Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 15 and SUs - Planning the Upgrade — Cisco Systems · tier 2 current vendor documentation · Planning the Upgrade chapter, supported upgrade paths table, version switching column
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM backup and upgrade: source note cucm-backup-upgrade-inf-11x-no-revert. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-backup-upgrade-inf-11x-no-revert
BibTeX
@misc{warmtransfer-claim-cucm-backup-upgrade-inf-11x-no-revert,
title = {Unified CM backup and upgrade: source note cucm-backup-upgrade-inf-11x-no-revert},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-backup-upgrade-inf-11x-no-revert},
note = {Source note cucm-backup-upgrade-inf-11x-no-revert, checked 2026-09-24}
}