show boot {on <DEVICE-NAME>}
      show boot {on <DEVICE-NAME>}
         | boot | Displays primary and secondary image boot configuration details (build date, install date, version, and the image used to boot the current session) | 
| on <DEVICE-NAME> | Optional. Displays a specified device's boot configuration 
 Note: Use the on
                              <DEVICE-NAME> option to view a remote device's boot
                           configuration. | 
ap7532-DF9A4C#show boot
--------------------------------------------------------------------------------
     IMAGE            BUILD DATE             INSTALL DATE          VERSION
--------------------------------------------------------------------------------
  Primary       05/25/2019 06:43:28     06/03/2019 15:25:22     5.9.5.0-004D
  Secondary     07/31/2019 17:14:41     08/06/2019 13:10:02     5.9.6.0-003D
--------------------------------------------------------------------------------
Current Boot       : Secondary
Next Boot          : Secondary
Software Fallback  : Enabled
ap7532-DF9A4C#
         nx9500-6C8809#show boot
--------------------------------------------------------------------------------
     IMAGE            BUILD DATE             INSTALL DATE          VERSION
--------------------------------------------------------------------------------
  Primary       06/28/2019 09:31:40     07/01/2019 13:57:47     7.2.0.0-009D
  Secondary     07/31/2019 18:44:43     08/06/2019 12:04:14     5.9.6.0-003D
--------------------------------------------------------------------------------
Current Boot       : Secondary
Next Boot          : Secondary
Software Fallback  : Enabled
VM support         : Not present
nx9500-6C8809#
         nx9500-6C8809#device-upgrade rf-domain WiNG5 all
In progress ....
----------------------------------------------------------------------------------------------------
      CONTROLLER        STATUS                                MESSAGE           
----------------------------------------------------------------------------------------------------
  B4-C7-99-6C-88-09    Success    WiNG5(device type-count: ap7562-1 ap8432-1 added for upgrade),
----------------------------------------------------------------------------------------------------
nx9500-6C8809#