Hello everyone, I would like to install e OS on my Galaxy A3 2016.
However, e OS says the following: Warning: Downgrading Smartphones already on Android Q or LineageOS 17.x to Pie or other OS can cause instability or at worst brick some devices.
This old Recomandation is for recent devices, and more relative to Stock OS level.
Actual /e/ version for your device is Q based.
latest Samsung firmware is Nougat based, no conflict here.
but some parts were possibly optimised by lineage 18.1,
so restore to latest Samsung OS to start from scratch is always a safe way.