Hi there, I'm 3.5 years Xiaomi Mi6 users. I use custom roms since 2012 my old phone and continue with Xiaomi Mi6. Currently I found Android Open Source Project 11 and it is unofficial I think but I used it and very good. I wanted to share it with you.
I'll change the thread detailed. here for first beta MIUI12 for Mi6
Download Link Here : http://hugeota.d.miui.com/20.4.27/miui_MI6_20.4.27_12ed897867_9.0.zip
For more info, follow the link : https://forum.teknomoli.net/threads/mi6-miui-12-indir.238/