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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...