downgrading from oreo to naugat then to marshmallow

afefafef United StatesPosts: 9 ✭✭✭

Hey guys My phone is "zte axon 7 a 2017 g , version oreo b03 " i want to downgrad from oreo to naugat then from naugat to marshmallow ( want to unloack bootloader)i can do that with the right versions with locked bootloader !

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