Installing Miui From Custom Rom Saosp

[Liorkd]

Hi,
I installed long time ago this ROM:
[ROM]sAOSP Project [Battery++][UnderClock][SwapOn][Tweaks][SSmooth]
and I would like to install the MIUI ROM (7 or 8).
What do I need to do?
I do not want to brick it.
Thanks!

 

[Luka69]

just go to twrp, wipe everything, but remove sd card and all will be ok