MMtool – BIOS modifying
MMtool is a utility software used for modifying BIOS files, specifically those created by Phoenix Technologies. It allows users to view and edit individual modules within the BIOS file, such as the VGA BIOS, LAN controller BIOS, and other firmware components.
MMtool is designed to be used by advanced users who are familiar with BIOS and firmware modification, as it requires some technical knowledge and experience with hex editing. With MMtool, users can extract, modify, and replace individual modules within the BIOS file, making it possible to customize and optimize BIOS settings for specific hardware configurations.
One of the key features of MMtool is its ability to display detailed information about each module within the BIOS file. This information includes the module name, size, version number, and other technical details. This can be useful for understanding how different modules interact with each other and for identifying areas of the BIOS that can be optimized or modified.
Another key feature of MMtool is its ability to extract and replace individual modules within the BIOS file. This makes it possible to modify specific settings and configurations without having to modify the entire BIOS file. Users can extract a module from the BIOS file, make changes to it using a hex editor or other software, and then replace the original module in the BIOS file with the modified version.
MMtool supports a wide range of BIOS file formats, including those used by popular motherboard manufacturers like Asus, Gigabyte, and MSI. It is also compatible with both 32-bit and 64-bit operating systems.

Overall, MMtool is a powerful and versatile utility software for modifying BIOS files. While it requires some technical knowledge and experience with hex editing, it is a valuable tool for anyone who needs to customize or modify BIOS files. With its ability to extract, modify, and replace individual modules within the BIOS file, MMtool provides a flexible and efficient way to optimize BIOS settings for specific hardware configurations.
How to use MMtool
- Download the latest version of MMtool from a trusted source, such as the official Phoenix BIOS Editor website.
- Install and launch MMtool.
- Once launched, MMtool will display a file browser window. Use this window to navigate to the BIOS file that you want to modify.
- Once you have selected the BIOS file, click on the “Open” button to load the file into MMtool.
- MMtool will automatically scan the BIOS file and display a list of modules that are contained within the file. These modules may include things like the VGA BIOS, LAN controller BIOS, and other firmware components.
- To view more information about a specific module, click on the module name in the list. This will display detailed information about the module, including its size, version number, and other technical details.
- To modify a module, select the module from the list and click on the “Extract” button. This will extract the module to a separate file that you can edit using a hex editor or other software.
- After you have made the necessary changes to the module, click on the “Replace” button in MMtool and select the modified module file. MMtool will then replace the original module in the BIOS file with the modified version.
- If you want to save the modified BIOS file, click on the “Save As” button and choose a new filename for the modified file. You can also choose to save the modified BIOS file as a different file format, such as a BIN or ROM file.
- If you encounter any issues or errors while using MMtool, consult the documentation on the Phoenix BIOS Editor website or seek assistance from the MMtool community forums.
Overall, MMtool is a powerful and versatile utility software for modifying BIOS files. It allows you to view and edit individual modules within a BIOS file, making it possible to modify things like the VGA BIOS, LAN controller BIOS, and other firmware components. While MMtool requires some technical knowledge and experience with hex editing, it is a valuable tool for anyone who needs to customize or modify BIOS files.
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