Xiaomi Redmi 8 (olive)

Everything tested except for offline charging works

Steps to install

Unlock the bootloader of the Redmi 8, e.g. with XiaoMiTool V2 on Linux. Proceed only once this is done.

On the phone:

• Open Settings → About phone. Tap several times MIUI Version to enable Developer options.
• Open Settings → Additional settings → Developer options. Check that MI Unlock status is set to Unlocked, and enable USB debugging.

On the PC:

• Download TWRP 3.4.0-1 from https://twrp.me/xiaomi/xiaomiredmi8.html and rename to twrp.img.

• Download vbmeta.img from https://forum.xda-developers.com/t/guide-how-to-instal-gsi-rom-havoc-os-v3-x-official-arm64-a-b-on-redmi-8.4108735.

• Flash TWRP and vbmeta:

  adb reboot bootloader
  fastboot devices # check if device is connected correctly
  fastboot flash recovery twrp.img
  fastboot flash vbmeta vbmeta.img
  

On the phone:

• Press “Power” and “Volume Up” buttons for about 20 seconds until you see the TWRP screen.
• Select Wipe → Format Data.
• Select Wipe → Advanced Wipe and wipe System, Data, Cache, and Dalvik.

On the PC:

• Download phhusson's AOSP 11.0 v300.n from https://github.com/phhusson/treble_experimentations/releases. Note that the Redmi 8 is an ARM64 A/B device.

• Decompress the compressed image:

  xz --decompress system-roar-arm64-ab-gapps.img.xz
  

• Copy the uncompressed image to the Redmi 8.

On the phone (still in TWRP):

• Select Install → Install Image
• Select the uncompressed image file.
• Flash to System Image.

Hardware support

Component	Comment
Camera	Working
Speaker / Mic	Working
Bluetooth	Working
WiFi	Working
SIM / Mobile Data / Voice	Working
VoLTE	Not tested
Fingerprint	Not tested
NFC	N/A
Offline Charging	Not working

References

• Instructions for Redmi 7 (predecessor): https://github.com/phhusson/treble_experimentations/wiki/Xiaomi-Redmi-7
• Overview of guides for Redmi 8: https://forum.xda-developers.com/t/index-all-custom-rom-kernel-recovery-for-redmi-8.4109481/
• Generic instructions for GSI image flashing: https://www.xda-developers.com/flash-generic-system-image-project-treble-device/

Tested By: @01mf02 - 2021/03/04 - Template created by @zguithues and @hackintosh5