Zadig is now provided in 2 versions: One for XP users that includes KMDF/WDF 1.09 and one for Vista, Windows 7 and Windows 8 users that includes KMDF/WDF 1.11. Make sure you pick the right one! Libusb-win32 should now install the libusbK DLL. Windows 10: Installing unsigned drivers became more difficult in Windows 10. Select 'libusbK' as target driver; click on the drop down menu, and select 'Install Driver' click on 'Replace Driver' Disable power saving for USB devices. This is required to prevent Windows from turning off the controller or the USB to UART adapter. Open the Device Manager.
The USBASP windows driver was previously based on libusb-win32. The certificate on the base drivers have expired and the library has now been superseded by libusbK. Earlier today we packaged up the driver and uploaded it to the server. You can now download it from the location below.
- The.inf file for this driver does not have a valid signature in the.cat file and thus will not install on Win8+ OS (unless you disable driver signature enforcement checks). This is why Zadig uses libwdi which works around this issue. Zadig is life, zadig is love, don't try to be smart, the problem was already solved in a proven way.
- Embedded drivers: WinUSB v6.1.7600.16385, libusb-win32 v1.2.6.0, libusbK v3.0.7.0 & usbser (native).
This driver should work with version of Windows XP right through to 8.1 and the version 10 preview. (both 32 and 64 bit editions). Because the driver is signed, there should be no need to disable driver certificate enforcement or use Zadig.
Zadig is a Windows application that installs generic USB drivers, such as WinUSB, libusb-win32/libusb0.sys or libusbK, to help you access USB devices.
It can be especially useful for cases where:
- you want to access a device using a libusb-based application
- you want to upgrade a generic USB driver
- you want to access a device using WinUSB
Note:'libusb-based' above means an application that uses either libusb, libusb-win32 or libusbK.
Download
Updated 2020.03.28:
- Zadig 2.5 (4.9 MB)
System Requirements:
Libusbk Driver
Windows 7 or later.Windows XP and Windows Vista are NO LONGER SUPPORTED.
Usage
Download the executable and run it — no installation is necessary.
If elevation is required, you will be prompted for it.
An usage guide for Zadig is available HERE.
The executable is digitally signed and the signature should state: 'Akeo Consulting'
Frequently Asked Questions (FAQ)
A Zadig FAQ is available HERE.
To provide feedback, report a bug or request an enhancement please use the github issue tracker. Or you can send an e-mail.
License
GNU General Public License (GPL) version 3 or later.
You are free to distribute, modify or even sell the software, insofar as you respect the GPLv3 license.
Zadig is based on libwdi which uses an LGPL version 3 or later license.
The executable is produced in a 100% transparent manner, from its public source, using a Visual Studio environment.
Download Windows 10
Changelog
- Version 2.5 (2020.03.28)
- Fix
.cat
generation for some user directories with non western characters - Fix update check
- Improve error reporting
- Embedded drivers: WinUSB v6.1.7600.16385, libusb-win32 v1.2.6.0, libusbK v3.0.7.0 & usbser (native)
- Fix
Source Code
- libwdi 1.3.1 source (320 KB). Includes Zadig in the examples directory.
- Alternatively, you can clone the git repository using:
- For more information, see the github project.