Hello aegiap,   I am not finding any way to do it that way. You will need the iDRAC configured to import the Server Configuration Profile as that runs as a job in the iDRAC.  
Hello, At the moment I am provisioning Dell PowerEdge C6420 using JSON file to configure BIOS and NIC from the iDRAC web interface in the Configuration/Server Configuration Profile/Import section. I have to setup the IDRAC/BMC network information before hands to be able to access the web interface. My goal is to provision the server from the box with a USB drive containing BIOS JSON config and NIC JSON config (without any iDRAC/BMC network configuration at first). I cannot use Redfish API as the BMC is not (yet) available on the network. Is it possible to import at boot from a USB drive the BIOS config and NIC config ? Thank you
Import BIOS and NIC configuration at boot on a Dell PowerEdge C6420, is it 
possible ?