Downgrade From Miui 9 Weekly To Miui 8 Stable

[Matteo Sturaro]

Hi to everyone! I have the 9.1 eu rom, version 7.11.30, on my redmi note 4 mtk (nikel).
I have some freezes and reboots sometimes, so I would like to downgrade to the latest eu miui 8.5 stable.
How can I do this? Should I go to the twrp and perform the 4 wipes (system+data+dalvik+cache) and then install the rom? Will I find some problems doing this?
Thank you in advance.

 

[jc rey]

just format data , wipe dalvik+cache and install via twrp

system should not be wiped, dangerous.