FYI - I just updated the BIOS on my X370 Taichi from 3.00 to 3.10, which updated the CPU microcode from 0x8001126 to 0x8001129.
I have a “bad” Ryzen CPU - it segfaults under high compilation load in Linux, though I haven’t retested since the BIOS upgrade.
Details:
model : 1
model name : AMD Ryzen 7 1800X Eight-Core Processor
stepping : 1
microcode : 0x8001129
[ 0.000000] DMI: To Be Filled By O.E.M. To Be Filled By O.E.M./X370 Taichi, BIOS P3.10 08/25/2017
CPU is from batch “UA 1711PGS”