Biostar B550MT
Specifications
- Manufacturer: Biostar
- Chipset: B550
- Socket: AM4
- Form Factor: Micro ATX
- DIMM Slots: 2
- Color: Black
Latest BIOS Version
1. This BIOS update includes a critical fTPM firmware upgrade, enhancing security and optimizing game compatibility. Before proceeding, Back Up Your BitLocker Recovery Key and suspend BitLocker encryption in your operating system to prevent potential boot issues. 2. AGESA ComboAM4v2 PI 1.2.0.F Update ( Beta )
BIOS Release Notes Analysis
System Stability & Architecture
The Biostar B550MT launched with firmware version B55HS428.BSS, establishing initial platform support for AM4 processors. Subsequent updates prioritized critical security mitigations within the AMD firmware architecture. Version B55HS905.BSS integrated AGESA ComboAM4v2 PI 1.2.0.B, which mitigates the Inception speculative side-channel vulnerability (CVE-2023-20569) affecting Zen 2 and Zen 3 architectures. Intermediate maintenance in version B55HS507.BSS delivered general performance optimizations to enhance system stability.
Performance Tuning & Latest Features
Recent firmware development focuses on hardening the System Management Mode (SMM) and updating trusted computing modules. Version B55HS819.BSS updated the codebase to AGESA 1.2.0.Cc, patching the high-severity Sinkclose vulnerability that allowed SMM lock bypass on Ryzen 3000 and 5000 series CPUs. This was followed by version B55HS613.BSS, which implemented AGESA 1.2.0.E to address further SMM vulnerabilities (AMD-SB-7027). The latest release, version B55HS831.BSS[Beta], introduces AGESA 1.2.0.F; this update upgrades the fTPM firmware to improve compatibility with Windows 11 and anti-cheat software, while also resolving persistence issues with custom fan curves.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.