Upgrade Huawei Mate 8 to B192 Marshmallow Firmware [OTA Update]
How to degrade Nougat to Marshmallow on an Android phone - Quora
How To Downgrade Android Nougat To Android Marshmallow - YouTube
Download/Install Huawei P10 Lite B191/B192 Nougat Update [Europe]
How to Downgrade Mate 8 from Android Nougat to Marshmallow
Discussion] Your Android now has the ability to give you an unlimited supply of whatever version/sweet you're on. Would you stay, or would you downgrade? : r/Android
Downgrade Nougat Mate 8 to Marshmallow Stable Build
Downgrade Huawei Mate 8 From Android Nougat to Marshmallow