@AppLee Thanks for the response! If I understand you the Ubuntu Touch OS is split between a system and userdata partition, with click apps modifying the userdata partition while system updates modify the system partition.

I have heard a lot of information about Ubuntu Touch's read-only filesystem, but I don't really understand how it works. Is it the same as an immutable distribution, and if so, how do updates actually work on a technical level?

Also, how is Ubuntu adapted to fit this read-only model?