Asus PRIME B350-PLUS

Launch Stability & Compatibility

Early firmware revisions focused on stabilizing the initial AM4 platform, with v0503 and v0515 addressing memory training variances and CPU temperature monitoring precision. Updates v0606 and v0805 integrated AGESA 1.0.0.4a and 1.0.0.6a respectively to broaden DRAM compatibility and device support. The transition to support Raven Ridge APUs began with v3805[Beta] (AGESA 1.0.0.0a), culminating in v4207 (AGESA 1.0.0.6), which optimized performance for Athlon processors with Radeon Vega Graphics and finalized support for first-generation Ryzen architectures.

Feature Maturity & Hardware Support

Firmware v4602 and v4801 prepared the board for Ryzen 3000 series processors via AGESA 0.0.7.2. A critical update in v5216 (AGESA 1.0.0.3ABBA) restored correct single-core boost frequencies, fixed the RDRAND instruction bug affecting Linux and Destiny 2, and disabled unstable PCIe Gen 4 support on this chipset. Windows 11 readiness was established in v5606 by enabling the firmware TPM by default. Furthermore, v6042 (AGESA 1.2.0.7) resolved the widespread fTPM Stuttering issue caused by TPM key validation latency in the operating system.

Critical Security & Power Management

Recent updates focus on hardening the platform against speculative execution attacks. Version v6062[Beta] updated the codebase to AGESA 1.2.0.8 to mitigate security vulnerabilities, followed by v6203 which implemented AGESA 1.2.0.A. The latest releases, v6231 and v6232, integrate AGESA 1.2.0.Cc to patch the high-severity Sinkclose vulnerability (SMM Lock Bypass) and resolve a specific CPU exception triggered when adjusting localized power state settings.