Last Modified: Jul 28, 2026
Affected Product(s):
F5OS F5OS-C, Install/Upgrade
Known Affected Versions:
F5OS-C 1.8.2
Fixed In:
F5OS-C 1.8.2-HR1, F5OS v2.0.0
Opened: Dec 14, 2025 Severity: 1-Blocking
When performing a rolling System controller upgrade from 1.7.1 to 1.8.x it is possible on of the upgrading System Controllers does not complete its upgrade and show system image displays "in-progress" for that system controllers upgrade status indefinitely.
Dataplane should continue to function at a reduced rate. However, the System Controllers will not form a ConfD HA pair until both System Controllers are running the same System Controller version and management communication may be lost with the upgrading controller.
Problem is known to occur on a fully loaded CX1610 chassis.
Perform a manual switch of both service and os versions to match the peer System Controller. Example: echo "switch cc_os <iso-version> " | nc -U /var/sw-mgmt.unix echo "switch cc_serv <iso-version> no_restart" | nc -U /var/sw-mgmt.unix where <iso-version> is the version the peer System Controller is currently running. Then reboot the system reboot the system controller
Ugrades from 1.7.1 to releases 1.8.x and later are no longer subject to becoming stuck in the "in-progress" state.