Cisco Nexus 2000 Series Switches; Cisco Nexus 3000 Series Switches; Cisco Nexus 5000 Series Switches; Cisco Nexus 7000 Series Switches; Cisco Nexus 9000 Series Switches; Cisco Routers. Cisco ISR 800 Series Router; Cisco ISR 900 Series Router; Cisco ISR 1100 Series Router; Cisco ISR 4000 Series Router; Cisco ASR 900 Series Router; Cisco ASR 1000 ... Ensure that neither In-Service Software Upgrade (ISSU) nor In-Service Software Downgrade (ISSD) is in progress before starting the factory reset process. Limitations for Performing Factory Reset Software patches, if installed on the device, will not be restored after the factory reset operation.