MSI B450 Gaming Plus MAX

Launch Stability & Compatibility

The firmware lifecycle begins with foundational updates to the AMD ComboPI codebase. Version vH1 integrates ComboPI 1.0.0.3ab to patch RDRAND instruction errors affecting Linux and Destiny 2 boot sequences. Update vH3 implements ComboPI 1.0.0.3abba, correcting boost clock frequencies to ensure Ryzen 3000 processors reach advertised speeds. Boot initialization and NVMe device compatibility are optimized in vH4 (ComboPI 1.0.0.4 Patch B) and vH5. Version vH6 resolves HDMI audio signal loss on RX570 GPUs via AGESA 1.0.0.5, while vH7 finalizes support for early Ryzen architectures with AGESA 1.0.0.6.

Feature Maturity & Hardware Support

Transitioning to the ComboV2 architecture, vHA enables Ryzen 5000 series support via AGESA 1.1.0.0. Version vHB introduces Resizable BAR support and optimizes AGESA 1.2.0.0 for Nvidia GPUs. Connectivity stability is addressed in vHC (AGESA 1.2.0.2), which mitigates USB dropout issues common on 500-series chipsets. Update vHE upgrades the codebase to AGESA 1.2.0.6c to support the Ryzen 7 5800X3D, while vHG (AGESA 1.2.0.7) resolves fTPM Stuttering latency and enforces Secure Boot defaults. Version vHI adds ASPM Control options to refine power management.

Critical Security & Power Management

Recent updates focus on hardening the platform against speculative execution vulnerabilities. Version vHH1[Beta] (AGESA 1.2.0.8) and vHK (AGESA 1.2.0.B) mitigate the Inception vulnerability and address TPM out-of-bounds access. Update vHL integrates AGESA 1.2.0.Ca to patch CVE-2024-36877 and the LogoFAIL image parsing exploit. The high-severity Sinkclose SMM lock bypass is mitigated in vHN2[Beta] via AGESA 1.2.0.Cc. Maintenance updates include vHN (AGESA 1.2.0.E) restoring WiFi functionality and vHO (AGESA 1.2.0.F) resolving fan curve persistence bugs. Finally, vHP1[Beta] upgrades TPM firmware to enhance Windows 11 and anti-cheat compatibility.