Windows 10 Build 15035 Media Builder Exclusive Now

Extract the Media Builder tool to the root of your C:\ drive. Run Build.cmd as an administrator. :

Microsoft never published an official ISO or FFU (Full Flash Update) image for Build 15035. The build leaked via beta collectors and was shared as raw, unpacked system files (a "payload"). You cannot flash raw files to a phone. windows 10 build 15035 media builder

With this build, a Surface RT could:

as an administrator. The tool will download the necessary files (approx. 30 minutes) and format a USB drive (at least 8GB recommended) Booting the Device Extract the Media Builder tool to the root of your C:\ drive