iDRAC: iDRAC8 | UEFI0315 Error at POST after downgrading iDRAC8 firmware

 
The secure Boot Policy setting must be set to Custom attempting to reset Secure Boot Keys. Secure Boot can be either Enable or Disabled. 


F2 System Setup >> System BIOS >> System Security >> Secure Boot:

• Type: Basic Auth
• Username: iDRAC user
• Password: iDRAC User Password

Headers Tab:
 
 

• Key: Content-Type
• Value: application/json

Body Tab:
 
 

• Select the raw radio button.
• Add {"ResetKeysType":"ResetAllKeysToDefault"} to text field
• Click "Send" when all fields have been populated.

Confirming Result

If the Redfish post command was successful, Postman shows similar messaging in the Response field:

{

    "@Message.ExtendedInfo": [

        {

            "Message": "Successfully Completed Request",

            "MessageArgs": [],

            "MessageArgs@odata.count": 0,

            "MessageId": "Base.1.0.Success",

            "RelatedProperties": [],

            "RelatedProperties@odata.count": 0,

            "Resolution": "None",

            "Severity": "OK"

        },

        {

            "Message": "The operation successfully completed.",

            "MessageArgs": [],

            "MessageArgs@odata.count": 0,

            "MessageId": "IDRAC.1.6.SYS413",

            "RelatedProperties": [],

            "RelatedProperties@odata.count": 0,

            "Resolution": "No response action is required.",

            "Severity": "Informational"

        }

    ]

}