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Internet Archive hosts various pre-prepared 15035 images for Surface RT.
If you need legacy support but cannot find a legitimate "media builder link" for this specific build, consider these alternatives: windows 10 build 15035 media builder link
Security and licensing notes
Given the significant risks, attempting this on a primary or otherwise valuable device is strongly discouraged. This is a project for advanced enthusiasts with a high tolerance for troubleshooting and a good understanding of system recovery. I can help guide you to the right tools based on that
Storage for the modified recovery environment and deployment image ( install.wim ). Official Microsoft Surface Recovery Image
If you cannot use Rufus, you can use the command line, as described in Surface RT setup tutorials : Open Command Prompt as Administrator. Type diskpart . Type list disk . Type select disk X (replace X with your USB drive number). Type clean , then create partition primary . Type format fs=ntfs quick . Copy all files from your mounted ISO to the USB drive. Final Considerations This is a project for advanced enthusiasts with
Attempting to deploy a raw, unreleased internal Windows development build onto locked-down Surface hardware requires substantial work. The raw .wim file lacks appropriate device drivers, has an active operating system "timebomb" expiration date, and contains severe performance bottlenecks.
Follow the specific instructions in the builder package (often a .bat or .ps1 file).
When Microsoft officially terminated mainstream support for Windows RT 8.1, original Surface RT owners were left with an OS that could not run modern apps or browse the secure web. However, the internal leak of changed everything.