So i almost built my pc to the end (i dont have gpu yet) and my motherboard is msi b450 tomahawk max and it has bios flashback button with it, and i thought it wouldnt be bad to update bios before booting up pc. I already have bios file on my usb. And how does it go? I need to press "I" button on psu, then should i put usb in back of the motherboard, then press flashback button, wait about 5 minutes for red light to stop flashing. and then unplug usb, and after that power the pc on. Am i correct?