ASRock B850M Pro RS WiFi White

Specifications

  • Manufacturer: ASRock
  • Chipset: B850
  • Socket: AM5
  • Form Factor: Micro ATX
  • DIMM Slots: 4
  • Color: White

BIOS Update Status

  • AGESA 1.2.0.3C

    Improves high-density memory compatibility, allowing stable operation of 4x DIMM configurations and 256GB total capacity.

  • AGESA 1.2.7.0

    Major enablement patch for next-generation 2026 processors; updates the PSP firmware and improves USB compatibility.

  • AGESA 1.3.0.0

    Preliminary support for the next major AM5 architecture revision; includes significant security hardening and memory training overhauls.

Resources

BIOS Update Notifications

Latest BIOS Version

Version:4.10
Release Date:2026-02-24

1. Update AGESA to ComboAM5 PI 1.3.0.0a.2. Optimized Memory Compatibility.3. Resolve a boot failure occurring on certain CPUs.SHA256: 2c4aa3c16584e16302b5490d00da528064690d74894a1abac58f88eba8b60d2f

BIOS Release Notes Analysis

System Stability & Architecture

The initial firmware release, v3.21, establishes platform support using AGESA 1.2.0.3a, which integrates cache hierarchy optimizations to enable Ryzen 9 9000X3D series processors and resolves specific boot failures affecting Ryzen 9000 CPUs. Subsequent architecture updates in v3.30 upgrade the codebase to AGESA 1.2.0.3e Patch A, which prepares compatibility for upcoming processors and patches the critical TPM Out-of-Bounds Read vulnerability (CVE-2025-2884) to harden system security against privilege escalation attacks.

Performance Tuning & Latest Features

Performance tuning begins in v3.25, which updates to AGESA 1.2.0.3d and optimizes Precision Boost Overdrive (PBO) parameters to enhance thermal management and frequency scaling. Version 3.40 further refines system operations by improving DDR5 memory compatibility and CPU stability under load via AGESA 1.2.0.3f. The latest update, v4.03, transitions the firmware to AGESA 1.2.7.1, a major enablement patch that updates PSP firmware and establishes preliminary support for next-generation 2026 processors.

ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.