DL380-G8. how to update BIOS for UEFI?

[GioSomma]

I have an HP-DL380-Gen8 server with ID 763483-B21.
I need UEFI for my operating system.
At Setup, the BIOS P70 05/21/2018 is reported.
From Support HPE I see that there is an update dated 2019.05.24 (A), but it does not refer to UEFI.
The most recent BIOS for UEFI appears to be dated Dec 12, 2011, thus older than my server's.
But I don't see in the options the one to activate UEFI.

The server does not have an operating system installed, so any updates I have to do at boot.
Thanks in advance for the help.

[Cali]

Hi,

the DL380 Gen8 Server was first sold in 2012, 9 Years past now.

There was no UEFI Support (expect DL580 Gen8) for Gen8 Server.

UEFI is introduced with Gen 9 Server around 2014.

Cali