LibreELEC 9 - Odroid C2 (arch)

The 9.0.x C2 image runs 64-bit kernel and 32-bit userspace to make use of libwidevine libs which are only available in 32-bit format. It's the same arrangement as 95% of Android installs and doesn't impact anything - apart from the first reboot after updating when you might see some add-on failures due to wrong (userspace) arch. Once add-ons update to 32-bit versions and you reboot those will stop.