I have had Nougat on my Nexus 5 for several months. It's smooth, good battery life, but it's an unofficial ROM. To update, you need to reflash. Why is it not fr

I have had Nougat on my Nexus 5 for several months. It's smooth, good battery life, but it's an unofficial ROM. To update, you need to reflash. Why is it not from Google? It's clearly possible to do...