MMTool is not officially distributed by AMI to the public; it is meant for motherboard vendors and developers. Version 4.50.0.23 circulates on hardware forums (e.g., Win-Raid, BIOS-Mods) and is considered for modern firmware. For contemporary UEFI modding, tools like UEFITool , UEFITool NE , or MMTool 5.2+ are recommended.
Never modify a BIOS without having a verified backup of your original chip data and a way to recover (like a CH341A external programmer).
The software will display all firmware modules (PEI/DXE) within the image. Perform Modifications: Extract: Select a module and save it to your desktop.
Despite AMI‘s stance, MMTool 4.50.0.23 has been “leaked” to the public and can be found through careful searching. The Win-Raid forum, a respected community for BIOS modding, has received legal warnings from AMI and to MMTool. Moderators have stated: “The Company ‘American Megatrends Inc.’ (AMI) doesn’t offer any AMI Aptio UEFI MMTool version for the users (it is very expensive and can only be purchased by mainboard manufacturers) and doesn’t tolerate any download link to any of these tools (we have gotten already a specific warning from AMI some years ago)”.
With selected in the list, ensure the "Insert after" option is checked. Click the Insert button. Verify & Save :
for older BIOS files where newer tools like UEFITool might struggle with reconstruction. Lightweight and portable; no installation required.
MMTool is not officially distributed by AMI to the public; it is meant for motherboard vendors and developers. Version 4.50.0.23 circulates on hardware forums (e.g., Win-Raid, BIOS-Mods) and is considered for modern firmware. For contemporary UEFI modding, tools like UEFITool , UEFITool NE , or MMTool 5.2+ are recommended.
Never modify a BIOS without having a verified backup of your original chip data and a way to recover (like a CH341A external programmer). mmtool 4.50.0.23
The software will display all firmware modules (PEI/DXE) within the image. Perform Modifications: Extract: Select a module and save it to your desktop. MMTool is not officially distributed by AMI to
Despite AMI‘s stance, MMTool 4.50.0.23 has been “leaked” to the public and can be found through careful searching. The Win-Raid forum, a respected community for BIOS modding, has received legal warnings from AMI and to MMTool. Moderators have stated: “The Company ‘American Megatrends Inc.’ (AMI) doesn’t offer any AMI Aptio UEFI MMTool version for the users (it is very expensive and can only be purchased by mainboard manufacturers) and doesn’t tolerate any download link to any of these tools (we have gotten already a specific warning from AMI some years ago)”. Never modify a BIOS without having a verified
With selected in the list, ensure the "Insert after" option is checked. Click the Insert button. Verify & Save :
for older BIOS files where newer tools like UEFITool might struggle with reconstruction. Lightweight and portable; no installation required.