BIOS version number are different for different motherboards, you can't just say 5007 without saying which board.
Go to the CPU support page for whatever board you're looking at, it will list which CPUs it supports and what minimum BIOS revision is required for said support.
Thanks very much, really appreciate your help.![]()
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The new Ryzen CPU were supported since BIOS 4804. Presumably the latest BIOS just fixes bugs, updates support, or other things for stablity.