No, the ASUS B450 does not support Ryzen 3000 processors.
No, the ASUS B450 does not support Ryzen 3000 processors.
For a BIOS update, you can send an email to AMD and receive their complimentary boot kit loaner here https://www.amd.com/en/support/kb/faq/pa...n-Boot-Kit. Alternatively, all B450 motherboards work with every Ryzen processor.