It's been a while since I built a rig (2008) and while doing my research a buddy suggested I be sure to get EZ flash on my MB in case my CPU needs an updated BIOS. I just want to know if this feature is exclusive to ASUS or if other brands have the same feature but call it something else.
All motherboard's have a built in flash utility in the bios. Naming scheme varies brand to brand but all the same nonetheless.
To flash a motherboard to support a newer addition cpu will require a pre-existing supported processor to do so most times unless motherboard specifies it's capable of flashing without one installed, ie Msi Flashback. Asus has similar on some of theirs.
I'm thinking of going with a Ryzen 5 2600 and a ASRock X570 Phantom Gaming 4 so I can upgrade in the future. However, I want to be a bit flexible to take advantage of all the sales in the next week or so and I was told (maybe erroneously) that some X570 boards need to update in order to run a Ryzen series.