https://wccftech.com/asus-hints-amd-ryzen-5000-cpu-support-x370-motherboards/

Last August, we reported an unusual way of utilizing the AMD Ryzen 5000 Zen 3 CPU support on ASUS X370 motherboards. The workaround required the user to use ASRock's B450 motherboard BIOS. However, a recent discussion revealed on Reddit may open the possibilities for ASUS to officially offer Zen3 support on the X370 series boards.

Reddit user SovietMacguyver posted a conversation with an ASUS representative about support for AMD Zen3 processors. AMD officially blocked manufacturers from delivering Ryzen 5000 'Zen 3' Desktop CPU support on older X370 motherboards. This decision by AMD has required ASUS motherboards consumers and other companies to seek alternatives for help.