If you have landed here by typing "Android TV ARM ISO" into Google, you are likely on a mission. You probably want to download a disk image (an ISO file) of the Android TV operating system, built specifically for ARM architecture (like Raspberry Pi, Rockchip, or Amlogic boxes), to install on a device that isn't a standard commercial set-top box.
A: You can find Android-x86 ISOs (for PC, not ARM). For ARM, again, no standard ISOs. android tv arm iso
ISO Image for ARM-based Devices