MSI has released the first AMD AGESA 1.2.0.3 Patch B BIOS Firmware for its X570 motherboards. The motherboard manufacturer released the BIOS update for the trio of its X570 MEG lineup of motherboards, offering improved system performance on compatible Ryzen Desktop CPUs and APUs.
AMD AGESA 1.2.0.3 Patch B Official BIOS Firmware Rolls Out, Already Available On MSI's X570 MEG Series Boards
The AMD AGESA 1.2.0.3 Patch B is the official BIOS firmware that will be rolled out to X570 & B550 motherboards soon. The previous AGESA 1.2.0.3 Patch A BIOS Firmware was more of a BETA BIOS release. Much of the improvements, bug fixes, and stability will be carried over from Patch A to the Patch B BIOS.
MSI has so far been the only motherboard manufacturer to offer the latest AMD AGESA 1.2.0.3 Patch B BIOS firmware for its motherboards. While the initial list only includes three boards, the manufacturer has confirmed that more motherboards will be added to the list real soon which would include X570 and B550 MAX series products. If you are running any of the following boards, then it is advised to update to the latest BIOS:
| Marketing name | Beta BIOS | LINK | |||
| MAG B550 TOMAHAWK | E7C91AMS.A72 | https://www.msi.com/Motherboard/support/MAG-B550-TOMAHAWK | |||
| MAG B550M MORTAR WIFI | 7C94AMS.182 | https://www.msi.com/Motherboard/support/MAG-B550M-MORTAR-WIFI | |||
| MEG B550 UNIFY | E7D13AMS.132 | https://www.msi.com/Motherboard/support/MEG-B550-UNIFY | |||
| MEG B550 UNIFY-X | E7D13AMS.A32 | https://www.msi.com/Motherboard/support/MEG-B550-UNIFY-X | |||
| MEG X570 GODLIKE | E7C34AMS.1E3 | https://www.msi.com/Motherboard/support/MEG-X570-GODLIKE | |||
| MEG X570 ACE | E7C35AMS.1F2 | https://www.msi.com/Motherboard/support/MEG-X570-ACE | |||
| MEG X570 UNIFY | E7C35AMS.AA3 | https://www.msi.com/Motherboard/support/MEG-X570-UNIFY |
The AMD AGESA 1.2.0.3 Patch B BIOS Firmware also extends support to the Ryzen 5000G APUs (Cezanne) and Ryzen 5000 CPUs (Vermeer B2 Stepping). One of the key features of the Patch B BIOS is that it resolves all USB issues that users have been facing on Ryzen 5000 systems. Aside from that, there aren't any major updates or changes listed but for those who have been facing these issues, it's once again advised to move to the new BIOS for stability. We will keep you up to date once more manufacturers and motherboards receive the AGESA 1.2.0.3 Patch B BIOS.
