Mmtool+326zip -

MMTool v3.26 is a specialized utility developed by American Megatrends (AMI) for managing and modifying modules within older, non-UEFI (legacy) AMI BIOS firmware. Often distributed in a compressed archive labeled mmtool+326zip

add NVMe support

Are you looking to or update CPU microcode for a specific motherboard model? mmtool+326zip

  • Intel NVMe driver v5.2.0.326 (or similar)
  • A known working FFS module size/checksum for older chipsets (Z77/Z87/X99)
  • Sometimes just a version tag from user "326" who compiled the module
  • UEFITool (by LongSoft): Open-source, supports newer BIOS structures, including Intel FIT and padding.
  • MMTool 5.2: Officially supports Aptio V (5th generation) BIOSes. It can handle larger capsules.
  • UEFI BIOS Updater (UBU): Uses MMTool under the hood but automates updating CPU microcode, RAID, and LAN option ROMs.
  • Extract target module
    • Save the modified ROM from MMTool/UEFITool.
    • Use hashing/signature tools if platform requires signed capsules (many modern boards will reject unsigned images).

    : Modders use it to update legacy RAID or AHCI Option ROMs (like Intel RST) to newer versions, which can improve boot times and SSD compatibility on aging systems. Operational Workflow MMTool v3

    Run MMTool.exe as Administrator (right-click > Run as administrator). Some BIOS operations require low-level access. Intel NVMe driver v5

    The typical process for using MMTool v3.26 involves a few critical steps to ensure system stability: Load Image