Device

AOSP boots, WiFi, cellular data works, sound works

Steps to install

PWR + VOL+ --> Recovery

PWR + VOL- --> Bootloader

• Unlock bootloader in fastboot mode (vbmeta.img and vbmeta_system.img are taken from the STOCK ROM, or it will bootloop!):

  $ fastboot flashing unlock
  $ fastboot --disable-verification --disable-verity flash vbmeta vbmeta.img
  $ fastboot --disable-verification --disable-verity flash vbmeta_system vbmeta_system.img
  

  WARNING: Unlocking will VOID YOUR WARRANTY and make fingerprint UNUSABLE! You may try this to recover fingerprint: https://forum.xda-developers.com/t/guide-for-calibration-finger-print-after-loss-data-calibration.4132961/ WITH STOCK ROM, to see if it worked!
• Enable ADB from stock ROM
• Enter fastbootd mode from adb:

  $ adb reboot fastboot
  

• Or enter fastbootd mode from fastboot:

  $ fastboot reboot fastboot
  

• Flash this image with the fastboot utility:

  $ fastboot flash system system-roar-arm64-ab-vanilla.img
  

• Reboot (or wipe device from stock recovery)

Hardware support

Component	Comment
Camera	Works
Speaker / Mic	Works with "Qualcomm features / Use alternative audio policy"
Headphone	Not working
USB DAC	Works
Type-C DP Alt mode	Works
GPS	Works
Bluetooth	Works
WiFi	Works (may not see 5G wifi at the first time)
SIM / Mobile Data / Voice	Works
Tethering	Not working
Proximity Sensor	Works
Accelerometer / Gyroscope	Works
VoLTE	Not working (China Telecom) (Works with steps in https://github.com/phhusson/treble_experimentations/issues/1681, but not persisted across reboots)
Fingerprint	Not working
Brightness	Works without auto brightness (light sensor works)
Offline Charging	Works
Quick Charging	Works (~5A charging current with stock charger)
Fan control	Works with "Nubia features / FAN speed"
Logo LED	Not working
RGB LEDs	Works with "Nubia features / REDMAGIC RGB"
Display Refreshing Rate	Supports 60/90/120/144/165Hz with "Misc features / Force FPS"
Shoulder Buttons	Not working
Side Switch	Not working
Vibration	Works

Tweaks

Name	Comment
Rounded corners	Set "Misc features / Set rounded corners diameter" to 30~50 and reboot

Notes

1. You can re-lock your bootloader with stock ROM to restore your fingerprint. Backup your persist partition.
2. Nubia is using the test key(external/avb/test/data/testkey_rsa4096.pem) to sign boot, vendor_boot, dtbo and odm partitions. You can create a new vbmeta.img with this key from AOSP and keep Magisk with a locked bootloader, also get the working fingerprint.

---

Tested By: notsyncing - NX669J(CN), AOSP 11.0 v302 - 2021/03/12 - Template created by @zguithues and @hackintosh5