Update 2026-02-04: 2602.1 UI Preview is now available - click the link to get the build and check out the Quick Start Guide

Using Full Flash Update (FFU) files to speed up Windows deployment

What if you could have a Windows image (Windows 10/11/Server/LTSC) that has:

• The latest Windows cumulative update
• The latest .NET cumulative update
• The latest Windows Defender Platform and Definition Updates
• The latest version of Microsoft Edge
• The latest version of OneDrive (Per-Machine)
• The latest version of Microsoft 365 Apps/Office
• The latest drivers from any of the major OEMs (Dell, HP, Lenovo, Microsoft) (yes, the latest, not some out of date enterprise CAB file from years ago)
• Winget support so you can integrate any app available from Winget directly in your image
• ARM64 support for the latest Copilot+ PCs
• The ability to bring your own drivers and apps if necessary
• Custom WinRE support

And the best part: it takes less than two minutes to apply the image, even with all of these updates added to the media. After setting Windows up and going through Autopilot or a provisioning package, total elapsed time ~10 minutes (depending on what Intune or your device management tool is deploying).

The Full-Flash update (FFU) process can automatically download the latest release of Windows 11, the updates mentioned above, and creates a USB drive that can be used to quickly reimage a machine.

Getting Started

If you're new, check out the Quick Start Guide. This will be the fastest way to create your first FFU. There's a new FFU Builder Quickstart Youtube video based on the 2602.1 UI Preview release.

Older Youtube Videos

2507.1 UI Preview Video - First UI Preview release video. This goes deeper than the quick start video, but is missing some features that have been added since 2507.1 was released.

2407.2 Video - This was the main deep-dive video on FFU Builder (before it had that name). This is a good deep dive into how the BuildFFUVM.ps1 script works, but a lot has changed since that build.

UI Progress

The UI builds are in a good spot now that most people should have moved over to using the UI if you haven't yet. I'll likely be updating main with the UI branch code within the next month or so.