In general Mi Mix 2S is an excellent phone which will provide you with good value for it’s price. If you’re looking for a beautiful device with a good camera, IPS screen and great battery life you can surely relay on Xiaomi Mi Mix 2S. For those who already owns this phone we gathered all currently available custom ROMs in one place.
Download Custom Firmware for Mi Mix 2S (polaris)
Let’s take a look at the most interesting unofficial ROMs for Xiaomi Mi Mix 2S device. Below you’ll find latest Android 9.X and Android 8.X ROMs.
Wipe system/cache/dalvik and data partitions. It’s recommended to “format data” as well.
Flash downloaded ROM and install gapps (arm64-9.0) if needed.
Optionally you can flash Magisk if you need root.
Reboot into system.
GooglePixelROM or Mi Mix 2S
Android 9.0.0_r8 | Status: Beta | Based on AOSP | Developer: argraur | GitLab | XDA Thread
Install TWRP Custom Recovery, v.8 or above is required.
Wipe system/data/cache/dalvik partitions. Then “format data”. After data format you’ll need to reboot the recovery.
Flash downloaded .zip archive.
Reboot into system for the first time.
Pay attention! Do not lock the screen on the first startup, otherwise you can’t unlock it further. The solution is simple, after the first system startup go to “Settings” > “Screen” > “Additional” > “Automatic Screen Lock” and turn-off “Always enabled” option.
Also you can fix other issues by flashing additional patches.