Re: Scratch, Scratch-scratch, Scraaaaatch
Replying to my own post here, but just in case anyone reads this now, things have changed (and despite the downvote, what I wrote was true and confirmed by AMD at time of the original posting).
The new news is that AMD have now backed down on the no Zen 3 support for X400 based boards, such as the B450 Max etc. (Although 300 boards are still unsupported).
But they have said this will only be available in a beta BIOS from the board manufacturer, at their (the board manufacturers) discretion. The user has to confirm they have a Zen 3 CPU before they can get or apply the beta BIOS (as this BIOS removes older CPU support for some boards, due to ROM size limitations, and so could effectively brick your board if applied without a Zen 3 chip to put in).