Question How to update motherboard BIOS ?

Klaus235

Commendable
Mar 1, 2022
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1,530
i have an MSI H370 Gaming Plus motherboard.
My CPU got fried due to overclock so I have no CPU at the moment.
I've ordered a Pentium G5400 so do I need to update the BIOS and how?
 

Klaus235

Commendable
Mar 1, 2022
76
0
1,530
do i have to install g5400 then flashing it to his bios?
or flashing it without cpu and how

sorry for misunderstanding at the last question i meant without cpu?