As the title says, this is a flashing guide for LeEco Le1s. I am using le1s for about a year now and honestly I am exhausted with eui (it sucks), So I flashed it with Resurrection Remix OS and now I am literally starting to like it and now I am posting this flashing guide like an expert (which I am not) but don't worry, even though I am not an expert this guide will definately work (you can trust me).