Installing Windows 8.1 ARM64 requires a device with ARM64 architecture. Here are the general steps:
The problem? You couldn’t install Windows RT from an ISO. It came pre-soldered onto devices like the Surface RT and Surface 2. There was no “Windows RT 8.1 Setup.exe.” There was no disc. windows 8.1 arm64 iso
A direct "Windows 8.1 ARM64 ISO" does not exist as an official, consumer-installable product from Microsoft. Windows 8.1 was only officially ported to ARM in the form of Windows RT 8.1 Installing Windows 8
Q: Can I install Windows 8.1 ARM64 on my laptop? A: It depends on your laptop's processor architecture. If your laptop has an ARM-based processor, you may be able to install Windows 8.1 ARM64. It came pre-soldered onto devices like the Surface
: The ARM version of Windows 8.1 (RT) was built for the 32-bit ARMv7 architecture, not ARM64. Support Ended