Not really and you know that full well
@Martini1991 . Any ROM size difference is down to mobo vendors. The point i made was that AMD or indeed Intel if you like, is that AMD need to make ROM size into any requirement for the lifespan of any cpu.............as indeed Intel should as well.
Making demands that Motherboard vendors to put large ROM chip's on their boards is one thing, them actually doing that is another.
Also: like the vast majority of AMD's customers imagine you're not tech savy, you buy an older Zen+ board with a Zen 2 processor because you're reading the hype around mixed platform support and you don't fully understand the nuances, it arrives, you put it together and it doesn't work, to you its broken, you send it back.
Then this happens:
The Retailer: Nothing wrong with this, RMA denied.
You: But it doesn't work????
The Retailer: you have to find an older CPU to put in the board first, then flash the BIOS to one that supports Zen 2 and then it will work.
You: What? WTF is Zen 2? What CPU do i need? I don't know how to flash the BIOS??????
The Retailer: If you write to AMD they will send you an older CPU to loan so you can flash the BIOS, Google "B450 BIOS flashing" to learn how to do it.
What sort of an impression are you going to get about AMD from that ^^^ ?