Of course, I have updated my girlfriend's Redmi 4 Pro few mouth ago using update App to MIUI 9.
I think your problem is the version of MIUI, because update app can verify only the last version available to download in zip from official site.
Go to en.miui.com and select your model
Here you...
The same for me, but when I installed again default ROM the problem return after few days of normal usage.
They tell me the first period it's only lucky.
I hope your problem have another solution.
Inviato dal mio Redmi 3 utilizzando Tapatalk
Hi, I had the same problem with my Redmi 3 Pro. In the end was a phone problem not only software.
I have sent it to seller during Christmas holidays and I'm still waiting it from RMA
Inviato dal mio Redmi 3 utilizzando Tapatalk