Downgrade with CLI reboot command

Procedure
  1. If the Smart Rate port speed configuration is auto-100, boot system flash primary command will prompt user to change the auto-100 to other configuration. 
    switch# boot system flash primary
This will reboot the system from the primary image.

Continue (y/n)? y
  2. To proceed, select y. 
    Firmware downgrade is not allowed when smartrate port is configured with
auto-100. Please change the speed-duplex to other configuration.
  3. To reject, select n.