I recently sideloaded Oreo onto my Nexus 5X, and everything went smoothly. However, today I received a "System Update Available" notification to "upgrade" to Android 8.0. I'm a bit confused; if I go through with this update, is it any different to what I sideloaded? And even if it is, is it better that I go through with it so that e.g. my phone believes that I have indeed upgraded?