bios flashback just in case something happens when I upgrade in the future.
In the future....
That would mean you already have a cpu and dram installed, can install the latest bios, swap cpus.
Bios flashback is best used realistically if you are too lazy to update prior to cpu swap or are buying a new motherboard that doesn't have your cpus recognition.
It's a gimmick for the most part since it only works when combined with a USB that already contains the new bios which needs to be setup prior to the cpu swap, when the old cpu is still installed.
It's like buying a new car that comes with a 10year drive train warranty, and then getting a 5 year extended warranty as well, both of which start the same day, the day you buy the car.
It's honestly not needed, not for a possible 'future' update.