Thanks: shortly after I received my Mobo I actually did check to see which BIOS it has. According to the sticker on the board, it appears it has 3.01 while the Zen 5 X3D CPU requires 3.1, so I will have to flash it before doing anything else. At least the board has Flashback as that was something I looked at before buying the board. I spent some sleepless nights with my previous non-flashback board build until my board got delivered and I could confirm the BIOS was OK.
Good luck with your plans and build. Curiously enough I also currently have an EVGA 3080 FTW
And I will definitely report back here once I build the system: only expecting my cooler by Dec 6.