After modifications:

Once loaded, mmtool will display:

The mmtool+326zip package remains a legendary toolkit for three specific types of users:

For everyone else—especially owners of modern laptops (Intel 12th Gen+ or AMD Ryzen 7000+)—avoid mmtool+326zip. It will not recognize your BIOS structure and may create a corrupted file.

Final Pro Tip: Join the Win-Raid forum. The community there has already created "ready-to-insert" module packs and automated scripts that work seamlessly with mmtool+326zip. Always thank the developers who keep these legacy tools alive.

When using mmtool+326zip, you may encounter:

| Error Message | Cause | Solution | | :--- | :--- | :--- | | "Not a valid UEFI BIOS" | The file is corrupted or not AMI UEFI. | Verify BIOS source. Use UEFITool to check. | | "No enough space in volume" | The target volume lacks free bytes. | Delete an unnecessary module (e.g., a language pack) first. | | "Secure Flash violation" | Flash utility rejects the mod. | Use an SPI programmer (CH341A) for direct flashing. | | "MMTool has stopped working" | Trying to open an Intel FIT-based BIOS. | Use version 5.0 or 5.2. 3.26 cannot parse newer BIOSes. |

MMTool (usually MMTool.exe) is a UEFI firmware image editor.
Common uses:

In some forum posts (Win-Raid, BIOS-Mods), 326 refers to: