When AMD released the Ryzen 5000 series processors the X370, B350, and A320 chipsets weren’t supposed to be compatible with the new Ryzen 5000 series processors. Well looks like AMD has had a change of heart. AMD is now allowing a few selected motherboards to be able to get a BIOS update.
So if you are thinking of upgrading to the Ryzen 5000 series from a previous generation AM4 socket or are just deciding on your new build and looking for ways to lower total cost. Thanks to AMD you now have the opportunity to use one of these boards. The only thing you will have to figure out is if your motherboard will actually support the new Ryzen 5000 series. Don’t worry it is actually pretty easy.
How to find support for Ryzen 5000 Series
Goto your motherboard support page. This can be different depending on the manufacturer of the motherboard MSI, Gigabyte, and Asus will all have a support page. For example, if you are looking to update the bios on an MSI motherboard. you just have to go to the support page and enter the product information that you are looking for. So once you got the support page of your desired manufacturer. Check for the latest updates for your motherboard. If there is an update If you see one that lists support for Vermeer and Cezanne processors. (aka Zen 3 CPUs and APUs.) or you can check if there is an AGESA version 1.2.0.6b or 1.2.0.7. If you see either of these two listed on the support page. Then that motherboard is updated and will support the Ryzen 5000 series processors.

As you can see from the above image. MSI updated their X370 Gaming plus motherboard with the AGESA Comboam4v2PI 1.2.0.7 update. This means that this motherboard will be able to support the Ryzen 5000 series.