[Xiaomi Mi Mix 2 Guides, News, & Discussion] Kaji:
Hi all,

Here you may find a zip containing some very basic resources which can be found elsewhere without too much effort however I figured I would make things that slightest bit easier for some who use any of the MIUI 9+ builds.

The following zip file includes the latest custom SuperSU for MIUI Oreo, the latest release of TWRP, the latest release of AdAway.apk and for the hell of it, the stock MIX boot animation if you wish to use it on any other ROM. 20/5/18

https://www.dropbox.com/s/29u1z721blc1mdy/MIX Package.zip?dl=0

You can find guides elsewhere which go much more in-depth but I'll make a quick one for those who have unlocked bootloaders and are wanting to use any of the builds located on the official MIUI site: http://en.miui.com/download-334.html

The following are the steps I take for my usual installation;

1. Download chosen Official Developer or Stable ROM from the site above in FASTBOOT version. (Click "flashing guide", then "fastboot update" on the left menu where you will find all Xiaomi models, select either "latest global stable" or "latest global developer")

2. Extract ROM folder from download (example: chiron_global_images_8.4.19_20180419.0000.00_8.0_global) to C drive root.

3. Make sure fastboot drivers are installed and device can be seen by PC then download: https://xiaomiflashtool.com/

4. Connect your phone, load up the tool and click "select" on the top left. Here you will locate the ROM folder on C drive.

5. Click "refresh", if your phone is discovered then click "CLEAN ALL" at the bottom to prevent re-locking your bootloader followed by "flash" on the top right hand side which will initiate a full wipe of your phone followed by the installation of your ROM.

When complete allow phone to boot completely and then power it off. Continue below for root instructions.

6. Extract contents of MIX Package to your desktop and open CMD: Hold shift and right click your desktop, click "open powershell window here". Once powershell is loaded, type "cmd" and hit enter. When ready for step 7, boot your phone to fastboot mode.

7. You can either install TWRP or single-boot to it which will allow you to use it one time before reverting to stock recovery upon next reboot. For install, type "fastboot flash recovery recovery.img" and hit enter, then type "fastboot boot recovery.img" to boot to recovery. For single-boot TWRP type "fastboot boot recovery.img" which will boot into the img and allow any desired flashing without installing TWRP to your phone.

8. You are now in TWRP and should have storage access to your phone via your PC, copy SuperSU (and AdAway if desired) to your phone storage.

9. Hit "Install" in TWRP and select SuperSU zip file then flash. Once complete you may now boot your phone and progress through the first time setup.

10. Congratulations, you now have a completely fresh, clean rooted version of your desired MIUI. If you wish to enable full-system ad blocking, proceed to your file manager and install the AdAway.apk then follow instructions in-app.

As mentioned, this is not particularly a replacement for any other guide already published for the Mi Mix 2, it is the guide which I follow for all of my installations which gives me the cleanest possible MIUI. If you are using a stable release ROM and need to pass safety net then I suggest you use substitute SuperSU for Magisk however all the developer ROMs are unable to pass safety net anyway and I much prefer using SuperSU as it has never failed me and has the ability to hide the icon completely from launcher.

Kaji.