MSI MAG B660 TOMAHAWK EVA e-PROJECT

Launch Stability & Compatibility

The firmware lifecycle begins with the initial release vH0, quickly followed by vH2 which expands CPU support to the Intel Core i9-12900KS. Early updates focus on platform readiness and storage interoperability; version vH6 optimizes Asmedia SATA connectivity and prepares the architecture for 13th Gen processors, while vHA introduces native support for the exFAT file system. Memory configuration is significantly refined in vHC, which updates Memory Try It! auto-rules for DDR5 modules and integrates the MSI Driver Utility Installer for streamlined setup. Additionally, vHB and vHF adjust Secure Boot defaults to align with modern security standards.

Feature Maturity & Hardware Support

Transitioning to 14th Gen architecture, version vHE resolves critical "UNSUPPORTED PROCESSOR" BSOD errors to ensure boot stability with the new CPUs. Feature adoption expands in vHF, which optimizes Intel Application Optimization (APO) functionality. This support is broadened in vHH, enabling APO for 12th and 13th Gen Core processors and integrating Microcode 0x123 to disable CEP on specific 14th Gen steppings for improved performance consistency. Version vHH also stabilizes system behavior when toggling CSM mode, ensuring legacy hardware compatibility.

Critical Security & Power Management

Recent updates prioritize processor longevity and vulnerability mitigation. Version vHI integrates Microcode 0x125 to patch critical eTVB algorithm errors and resolves security vulnerability CVE-2024-36877. To combat physical degradation, vHJ implements Microcode 0x129, enforcing a hard 1.55V voltage clamp. This is followed by vHK, which introduces Microcode 0x12B to address the root cause of Vmin Shift Instability by regulating elevated voltage requests during light loads. Advanced protection against Vmin Shift Instability is added in vHM1[Beta] via Microcode 0x12F. Finally, vHM updates the ME Firmware to v16.1.38.2676 and fixes a bug where fan settings were not retained after exiting the BIOS without saving.