AMD released the latest AGESA 18.104.22.168b BIOS firmware update, also known as Patch B, some time ago.
MSI has now released the updated AGESA 22.214.171.124c version firmware, and it is also the first motherboard manufacturer to release the latest AGESA 126.96.36.199c BIOS firmware for its AM5 motherboards.
Regarding AGESA 188.8.131.52b, this version of BIOS has made some improvements to the AM5 platform, such as supporting higher frequency DDR5 memory, and some people even exceed 9000 MT/s.
Although the official details of 184.108.40.206c have not yet been announced, according to @Leaker Chi11eddog, the new firmware will further improve support for DDR5 memory and will fix motherboard manufacturers’ startup bugs.
The first batch of motherboards supported by this series of firmware include MSI MEG X670E ACE, PRO_B650-P_WIFI, PRO_B650-VC_WIFI and other models, based on Patch C.