Because this is a leaked, unofficial build, there is no official Microsoft "Media Builder" for it. You must typically use a community-developed "Image Builder" or manual deployment script to create a bootable installer. How to Build the Installation Media

Windows 10 Build 15035 is a leaked build of the Windows 10 Creators Update. It is primarily used as an unofficial upgrade for abandoned Surface RT and Surface 2 devices. Because this is not an official release, standard Microsoft tools cannot be used to install it; instead, enthusiasts use a community-developed Windows 10 Media Builder tool . Prerequisites A working Windows PC to run the media builder tool. USB Flash Drive: At least 8GB. Target Device: A Surface RT or Surface 2 tablet.

Extract the script tool into a folder on your root directory (e.g., C:\UUP-Converter ).

Attempting to install Build 15035 without a media builder will result in missing file errors or a "source not found" message during setup.

Windows 10 Build 15035 Media Builder Install: Ultimate Guide for Surface RT

Microsoft does not host Build 15035 on the standard Media Creation Tool. You must retrieve the files through reputable community archives.

: A Microsoft Surface RT (Generation 1) or Surface 2 tablet.