Source note · Cisco IP phone firmware management
As of the page's 2026-09-01 update, the latest PhoneOS release for 9800 Series and 8875 phones is 5.0(1), released 2026-08-19.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Desk Phone 9800 Series
- Subsystem
- firmware releases
- Deployment
- on-premises, multi-tenant
- Region
- not restricted
- Release range
- PhoneOS 5.0(1)
- Checked
- 2026-09-25
Sources
- Release Notes for Cisco PhoneOS Phones 9800 and 8875 — Cisco Systems (Webex Help Center) · tier 2 current vendor documentation · Release Notes for Cisco PhoneOS Phones 9800 and 8875 > PhoneOS 5.0(1) section
Cite this note
APA
WarmTransfer. (2026, September 25). Cisco IP phone firmware management: source note cucm-phone-firmware-phoneos-latest-500. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-phoneos-latest-500
BibTeX
@misc{warmtransfer-claim-cucm-phone-firmware-phoneos-latest-500,
title = {Cisco IP phone firmware management: source note cucm-phone-firmware-phoneos-latest-500},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-phoneos-latest-500},
note = {Source note cucm-phone-firmware-phoneos-latest-500, checked 2026-09-25}
}