Warranty Differences Prosupport vs Onsite Service After Remote Diagnosis

Is it correct that under Onsite Service After Remote Diagnosis the customer is responsible and relied upon with such tasks as updating the BIOS of the server in question, including connecting the headless server to a monitor, booting from a flash drive the customer has to prepare himself/herself, selecting the correct recovery steps to update the BIOS? All of the above without any physical presence of a Dell technician onsite, on the customer's premises?

Thanks in advance.