Since a clean ISO doesn’t exist, you must use . For a Surface RT:
Still Stuck on Windows 8.1? How to Upgrade to Windows 10 or 11 windows 81 arm64 iso install
: For devices like the Surface RT, a "Golden Keys" exploit was discovered that allowed users to bypass Secure Boot, enabling the installation of early Windows 10 ARM builds—a process often facilitated by community-made Windows Media Builders . 3. The Shift to Windows 11 ARM64 Since a clean ISO doesn’t exist, you must use
If a website offers a "clean Windows 8.1 Arm64 ISO" with a fancy download button, it's likely malware. The real image is usually labeled something like 9600.17050.WINBLUE_RTM.140317-1640_ARM64FRE_CLIENT . Since a clean ISO doesn’t exist
There’s no official link. The only surviving Arm64 builds of Windows 8.1 come from: