How to complete the firmware upgrade without "pressing the enter to reboot" at the end?

I found this regarding Redfish API "GET UpdateService instance - The UpdateService schema describes the update service and the properties for the service itself with links to collections of firmware and software inventory. The update service also provides methods for updating software and firmware of the resources in a Redfish service." This may have useful for checking firmware inventory. https://dell.to/3kJbV8m and page 362 https://dell.to/40e6KNX

https://dell.to/3YaEIBp

Hi, unfortunately, I think it is not possible to bypass the "Press the enter to reboot" prompt. The prompt is a standard message indicating that the upgrade is complete and the server needs to be restarted for the changes to take effect. As I know reboot is necessary to ensure that the system is functioning correctly after the firmware or BIOS upgrade. You will need to manually press the enter key to reboot the server.  But then when I researched, maybe I looked at whether there could be a way through Racadm. I think it may be possible to do this with some commands through Racadm, but I don't know how to do it. For example, the command "cfgserverfirstbootdevice" https://www.dell.com/support/manuals/en-us/idrac9-lifecycle-controller-v4.x-series/idrac_4.00.00.00_racadm/cfgserverfirstbootdevice-read-or-write?guid=guid-9ef5ac7d-2e82-4a29-a077-ca6cea4cbfa9&lang=en-us

or https://www.dell.com/support/manuals/en-au/idrac9-lifecycle-controller-v4.x-series/idrac_4.00.00.00_racadm/set?guid=guid-ee55ef46-9b7a-44f3-b491-23fb907af557&lang=en-us  "Jobqueue Create BIOS.Setup.1-1" (A Commit Job Can Be Created with Creating a Reboot Job) command may be used to do this, but how can I be sure to do this DUP ISO image . I couldn't combine it like a puzzle, but maybe I could explain my perspective.

Regards,

Hi, we have API to issue the CLI command to reboot the box, but how can we know the firmware upgrade is completed or not? 

Is there any Redfish API to detect the firmware upgrade state?

Thanks.