https://wccftech.com/msi-releases-amd-agesa-1-2-0-1-bios-firmware-for-x570-b550-a520-motherboard/

MSI has officially announced the release of the AMD AGESA 1.2.0.1 BETA BIOS Firmware for its entire 500-series motherboard portfolio based on the X570, B550, and A520 chipsets. The BIOS firmware addresses a few issues but the two main changes are, support for SAM (Smart Access Memory) on Ryzen 3000 Desktop CPUs and L3 cache performance fix for the Ryzen 5000 CPUs.

As we had mentioned before, the AMD AGESA 1.2.0.1 BIOS Firmware was mainly to fix the bugged L3 cache performance for AMD Ryzen 5000 Desktop CPUs. AMD also announced that it will enable Smart Access Memory support for its Ryzen 3000 Desktop CPUs during the Radeon RX 6700 XT GPU launch event and that's being delivered too.