UEFITool
UEFI firmware image viewer and editor
Free · Open sourceLatest versionMac
About UEFITool
UEFITool is a viewer and editor of firmware images conforming to UEFI Platform Interface (PI) Specifications.
Very Brief Introduction to UEFI
Unified Extensible Firmware Interface or UEFI is a post-BIOS firmware specification originally written by Intel for Itanium architecture and then adapted for X86 systems. The first EFI-compatible x86 firmwares were used on Apple Macintosh systems in 2006, PC motherboard vendors started putting UEFI-compatible firmwares on their boards in 2011. Today there are numerous systems using UEFI-compatible firmware including PCs, Intel-based Macs, Tablets and Smartphones on x86, x86-64, arm64 and RISC-V architectures. More information on UEFI is available on [UEFI Forum official site](http://www.uefi.org/faq) and in [Wikipedia](http://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface).
Very Brief Introduction to UEFITool
UEFITool is a cross-platform open source application written in C++/Qt, that parses UEFI-compatible firmware image into a tree structure, verifies its integrity and provides a GUI to manipulate its elements. Project development started in the middle of 2013 because of the lack of cross-platform open source utilities for tinkering with UEFI images.
In the beginning of 2015 the major refactoring round was started to make the program compatible with newer UEFI features including FFSv3 volumes and fixed image elements. It's in development right now with the following features still missing:
- Editor part, i.e image reconstruction routines
- Console UI
The missing parts are in development and the version with a new engine will be made as soon as image reconstruction works again.
Derived projects
There are some other projects that use UEFITool's engine:
- UEFIExtract, which uses ffsParser to parse supplied firmware image into a tree structure and dumps the parsed structure recursively on the FS. Jethro Beekman's tree (opens in a new tab) utility can be used to work with the extracted tree.
- UEFIFind, which uses ffsParser to find image elements containing a specified pattern. It was developed for UBU (opens in a new tab) project.
GUID Database
Every new release includes an update to the database of known UEFI-related GUIDs build with help of Linux Vendor Firmware Service (opens in a new tab).
You can download the up-to-date version of that database using this link (opens in a new tab).
Description adapted from the project README.
- Version
- A75
- Updated
- Jul 10, 2026
- Size
- 14 MB
- License
- BSD 2-Clause License
Open source details
- Source code
- Exact source for A75
- Released
- Jul 10, 2026
- GitHub stars
- 5.7K
- Website
- github.com/LongSoft/UEFITool
Community project. Help and bug reports go to the maintainers on GitHub; AppsXi does not provide support for this app.
License
PermissiveBSD 2-Clause License
Use, change and share it freely, including in closed source apps, as long as the copyright notice stays.
Read the full licenseHow this app was checked
AppsXi checks every version before it is listed.
Signed by Vitaly Cheptsov (DHK4829982)
Apple Developer ID team DHK4829982
Notarized by Apple
Hardened Runtime on
File matches the hash GitHub published
SHA-256 34140173de7f5c8bcdcab98b354d350179831282bdd10a21058b93f8af26b772
No malware found
ClamAV 1.5.4 on Oct 14, 2026
Install and behavior test in a virtual machine: not run yet
Coming soon for all listings.
Versions
A75checked
Checked Oct 14, 2026 · Mac
DMG · 14 MB
Questions about UEFITool
Is UEFITool free?
Yes. UEFITool is free and open source under the BSD 2-Clause License. AppsXi lists the maintainers' official release and does not charge for it.
Is UEFITool safe to download?
AppsXi downloads every version of UEFITool from the maintainers' official GitHub release and checks it before it is listed. For version A75 (checked Oct 14, 2026), the Mac download is signed by its developer and notarized by Apple, each file matches the checksum GitHub publishes for the release, byte for byte and a malware scan found nothing.
Does UEFITool run on Apple silicon Macs?
Yes. UEFITool has a native Apple silicon build, and it runs on Intel Macs too.
Who makes UEFITool?
UEFITool is an open source project by LongSoft on GitHub (LongSoft/UEFITool). Help and bug reports go to its maintainers there.
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