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Hello everyone, we managed two FTD 2130 in a cluster with fmc. first we updated our fmc to 6.6.1. then we updated our cluster to 6.6.1, but the upgrade on our standby ftd failed, so one member is on version 6.6.0.1 (active ftd) and the other is on 6....
with tac support, we did a complete reimage of our firepower cluster. there was no other way to fix this issue. for more infos see: Cisco FXOS Troubleshooting Guide for the Firepower 1000/2100 with Firepower Threat Defense - Reimage Procedures [Cisco...