All you need to install any version of Raspberry Pi OS is the Imager tool, an SD card and reader, and around ten minutes.

For those of you unfamiliar with Casa OS it is a simple, easy-to-use, elegant open-source home cloud system that allows you to run self-hosted apps on your Raspberry Pi or other Linux devices.

A developer has managed to port Android 12L to the Raspberry Pi 4 Model B using an unofficial build of LineageOS 19.1.