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extracted_guard/ ├── guard_header.bin # Raw guard table header ├── guard_metadata.json # Human-readable layout ├── boot_block/ │ ├── bpm_signed.bin # Boot Policy Manifest │ ├── km_signed.bin # Key Manifest │ ├── acm_ibs.bin # Initial BootBlock ACM │ └── acm_debug.bin # Debug ACM (if present) ├── nvram_guard_region.bin # Protected NVRAM variables ├── oem_keys/ │ ├── pubkey_rsa2048.der │ └── pubkey_ecdsa256.der └── verification_report.txt # Signature pass/fail status
Do you have a or a .cap file that is giving you an "Invalid Image" error during extraction?
The development team (anonymous, as is typical for security tools) has hinted at upcoming features in version 4.0:
The updated tool can now export extracted guard regions as: ami bios guard extractor updated
As of mid-2026, this tool, maintained within the BIOSUtilities repository by platomav , remains the most reliable utility for parsing, extracting, and de-compiling AMI BIOS Guard firmware components.
Modern bootkits like and CosmicStrand hide inside the BIOS Guard region. By extracting and comparing the guard data against known good images, you can spot unauthorized code injections.
Generates a file named X_00 -- AMI_PFAT_X_DATA_ALL.bin , combining extracted components into a single image. extracted_guard/ ├── guard_header
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If you have questions about specific motherboard models or are trying to perform a modification, biosutilities - PyPI
It enables users to extract individual components, allowing for the analysis of specific modules rather than just the whole image. How to Use AMI BIOS Guard Extractor (2026 Workflow) By extracting and comparing the guard data against
Comprehensive Guide to AMI BIOS Guard Extractor Tools and Updates
(formerly Platform Firmware Armoring Technology or PFAT), a security technology that prevents unauthorized modifications to the BIOS. Key Features of the Update The latest version, hosted on platforms like , includes several core capabilities: Comprehensive Revision Support : It now parses all known
The AMI BIOS Guard Extractor is a software utility designed to extract and manage BIOS settings, configurations, and updates. It is a part of AMI's BIOS management tools, which provide a comprehensive solution for configuring, monitoring, and updating BIOS settings. The BIOS Guard Extractor is specifically designed to extract and analyze BIOS settings, providing users with a detailed understanding of their BIOS configurations.