How to do factory reset?
boot startup-config null
- Read upgrade procedure
- Release Notes for Cisco ASR 920 Router
- (optional) Cisco IOS and Cisco NX-OS Software Release Reference Guide
- (optional) Cisco Feature Navigator
- copy tftp os download os2
- IP address or name of remote host (TFTP): your-tftp-server-ip
- Download File Name : your-os-filename.x
- default-os os2
- reload os2
- Do you want to save the system configuration? [y/n] y
- Do you want to reload the system? [y/n] y
DONE 🙂