We have two Redmi note 4 phones. In both of them the official update for miui 9 also android nougut (same package total of 1.3 GB) came. In one of the phone it updated smoothly but in the other phone it is displaying - Try using full rom
Interesting fact is that the total 1.3 GB package everytime gets deleted after unsuccessful update attempt
Tried many times not functioning.
Please help to fix this bug.