Windows 11 Insider Preview ISO UUP Dump

Using the Windows Updated Unified Update Platform Dump (UUP Dump) to Create an Up to Date Windows 11 Insider Preview ISO

The Windows Updates Unified Update Platform Dump (UUP) is a project (not affiliated with Microsoft) that essentially tracks the downloads being downloaded by each Windows Insider Build and compiles a download script which will download all the files that correspond to a Windows Insider Preview Build. The download script then uses Disk Image Servicing and Management (DISM) commands to slipstream all these updates into an install.wim file creating an up to date Windows Insider Preview installation image. The UUP also downloads the rest of the files required to create installation media and builds an ISO from these files.

The DISM commands can be very time-consuming and at present there is little to gain by using the ISO generated by the UUP Dump over the Insider Preview ISO provided by Microsoft which is relatively up to date.

The advantage to using UUP Dump may be more apparent when several more Windows Insider Builds have been released assuming Microsoft are slow to release up to date Windows 11 Insider Preview Installation ISOs.

UUP Dump Download

The User Interface of the UUP Dump website is very straight forward. It lists the four Windows Channels:

  • Windows Insider Developer Channel
  • Windows Insider Beta Channel
  • Windows Insider Release Preview Channel
  • Public (Mainstream) Channel

In the vast majority of cases you will use the x64 download link corresponding to 64 Bit Windows.

Currently I am interested in a Windows 11 and the current build is only listed on the Windows Insider Developer Channel. Microsoft have stated they are going to release Windows 11 to the Beta Channel (so ensure you check both Channels if following this guide at a later date).

Once the Windows Insider Channel is selected, select the latest build which is listed. At the time of writing this is Build 22000.120:

Then select your language:

By default only the standard Editions (Home and Pro) are selected. Optional Editions (Education, Single Language, Workstation and Enterprise Editions) can be selected on the next page. Select Next:

The default option is to only Download these standard Editions and convert them to an ISO:

To get other Editions select the bottom Download method:

Once you have made your selection (I will return to only the Standard Editions), select Create Download Package:

You will now have downloaded a set of zipped download scripts:

Right click the downloaded zip file and select Extract All:

Select Extract:

Launching the UUP Dump Script

Now go to the extracted folder:

Right click the uup_download_windows.cmd script file and select Run as Administrator:

As the script file being created is new, it will not be recognized by Windows SmartScreen. You will have to select More Info:

Then Run Anyway:

Then you will get a User Account Control Prompt:

And you will see the Command Prompt Window informing you of the files being downloaded:

After the files have downloaded, the command prompt will change from black to blue and DISM commands will be ran in the background, slipstreaming all the updates into the install.wim (and then creating the ISO):

When the script is finished, it will instruct you to press 0 to exit:

The ISO generated will be in the same folder as the uup_download_windows.cmd script. It can be right clicked and mounted so the setup.exe can be used to launch an in place upgrade install.

Alternatively a Bootable USB can be made. Note that the install.wim of the installation ISO exceeds 4.0 GB. This means it will not fit on a USB with a single FAT32 partition as 4.0 GB is the upper file limit of FAT32. On many systems Secure Boot rejects a USB with only a NTFS Partition. To overcome this we need to make a USB with a 1 GB FAT32 Boot Partition and the remaining space allocated to a NTFS Install Partition. To save duplication, details are given in my Windows 11 Insider Preview Guide: