Thank you. But i tried to get ROM back by UPDATE.APP and when i want to go back to Marshmallow i get second-step honor logo and nothing after it. When i want to get Lollipop i have error "Software can't be installed" - something like that. I heard something about "Transition package" or "Downgrade Package" ? Maybe it can be work. But i can't find those packages for honor 5x KIW-L21.