How rollback to miui 9 from miui 10


Dec 12, 2016
32
2
20
#1
Hi,

I've miui 10.2.1.0 but i want rollback to miui 9 because battery drain.
I've flash with rom miui 9.5.2 but the phone enter in loop, back to miui 10... how do this? any tutorial?

thank you for help.