Answer

BIOS code starts from AGESA ComboAm4v2PI 1.2.0.7 would no longer support Bristol Ridge A-Series CPU due to limited BIOS ROM size for newer CPU(Ryzen 5000) support.

Models

X470 GAMING PRO, B350M PRO-VDH, B450M PRO-M2 V2, X470 GAMING M7 AC, B450 GAMING PLUS MAX, B450-A PRO MAX, A320M PRO-VH PLUS, B350M MORTAR ARCTIC, B450M PRO-VDH, B350 KRAIT GAMING, B450 TOMAHAWK, B450 TOMAHAWK MAX, X370 GAMING PLUS, A320M PRO-VD/S, B450M PRO-VDH MAX, B450 GAMING PLUS, X470 GAMING PRO MAX, A320M PRO-VHL, B350 GAMING PLUS, X470 GAMING PRO CARBON AC, A320M PRO-M2 V2, A320M PRO-VD, A320M PRO-VD PLUS, B350 TOMAHAWK, B450M PRO-VDH PLUS, A320M PRO-M2, B350 GAMING PRO CARBON, B450-A PRO, X370 GAMING PRO, B450 GAMING PRO CARBON AC, X370 GAMING PRO CARBON AC, B450M MORTAR, X370 SLI PLUS, B350I PRO AC, B350M BAZOOKA, B350 PC MATE, B350M PRO-VD PLUS, X370 GAMING M7 ACK, B450I GAMING PLUS AC, X470 GAMING PRO CARBON, A320M PRO-VD/S V2, B450M PRO-M2, X370 GAMING PRO CARBON, B450M BAZOOKA V2, B450M MORTAR TITANIUM, A320M PRO-E, B450M GAMING PLUS, B450M MORTAR MAX, B450M BAZOOKA, A320M BAZOOKA, B450M PRO-VDH V2, X370 KRAIT GAMING, X470 GAMING PLUS MAX, B350M MORTAR, B350 TOMAHAWK ARCTIC, B350M PRO-VH PLUS, B450M BAZOOKA PLUS, X470 GAMING PLUS, A320M GAMING PRO, A320M GRENADE, B350 TOMAHAWK PLUS, X370 XPOWER GAMING TITANIUM, B350M GAMING PRO, B450M PRO-M2 MAX