The Surface RT runs Windows RT (32-bit ARMv7). Because the security signing chain was cracked (via the "RT Jailbreak"), hackers attempted to load the leaked Windows XP ARM binaries.
Because a native ARM64 ISO does not exist, you must use a standard x86 ISO and an emulator that can translate instructions. Exploring Windows XP on macOS ARM64 - Milen windows xp arm64 iso fixed
Run Windows XP applications on an ARM64 Linux machine (e.g., Asahi Linux on M2 Mac, or Ubuntu on RK3588). The Surface RT runs Windows RT (32-bit ARMv7)
There is no official or "fixed" native Windows XP ARM64 ISO . Windows XP was originally developed for x86 and x64 architectures and never received an ARM release from Microsoft. While some community projects exist to maintain and "restore" XP for modern use, these focus on security and compatibility for existing x86 hardware rather than porting the entire OS to ARM64. Exploring Windows XP on macOS ARM64 - Milen