Welcome to the PCHF KidGo,
This motherboard is an Intel board.
So not only will you need to update your BIOS, but you'll need to update your BMC (Baseboard Management Controller) and your Firmware.
The way Intel suggest this is BMC first, BIOS and then Firmware.
If you check out this website, you will find all the things you need to.
Intel® Server Board SE7320SP2 - Important BIOS/Firmware Update Procedure