For official development and testing purposes, developers use the Android Emulator
This is Google's attempt to modularize Android. It allows for "Generic System Images" (GSIs). android tv arm iso
If you're looking to create a bootable Android TV installation media or want to learn more about Android TV on ARM devices, some online forums and communities, like XDA Developers or Reddit's r/AndroidTV, might have helpful resources and discussions. For official development and testing purposes