HiHi, did you flash TWRP with the MiFlash PC app? After you are in TWRP do you have to flash Magisk to get root? What about that non-verity zip? I'm really afraid to mess stuff up
No I installed it from fastboot via PC then boot in recovery wiped everything (including sdstorage otherwise storage will not work) then re-uploaded weekly eu rom and flashed it. Thats it. By the way weekly eu rom does not have google play store and other google apps, also flashed gapps from opengapps. com
Also for unlock, it took me just a seconds to unlock mix 2s and I dont know my account is diamond (or none), even I did not pay anything for diamond account, do not know how but I believe I am the first user who has unlocked Mix 2S )