Here is .... Simple TUTO Xiaomi S2 Micloud Unlocked with MRTKey Ver 2.59 Phone Condition :
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STEPS :
1. Use Mi Assistant to know firmware or MIUI version that phone,
you can see picture at below :
2. As you can see, in this case ...mobile set using MIUI version
9.5.9.0.OEFMIFA ( Device version ) .
" So, you need Download that firmware !!! "
** why needed to download ? ===> to get pesist file.
3. After Download has finished, Copy and Paste Persist file to MRTKey Folder
==> MRT 2.59/date/XM
4. Then Unlock that Mobile set using MRTKey Ver 2.59
5. Micloud Unlocked Done with easily w/o Bootloop !!!
Have a nice day !!!