pixelOS FLASHING GUIDE FLEUR(with VoLTE fix)

Requirements:

- PC (if you don't have SD Card)

- TWRP installed

- A11 firmware.zip

- Patched vbmeta installed (you can flash it before booting to ROM as well)

- Stock boot.img from MIUI version you're currently on

(Example: If I am on MiUi 13.0.10 Android 11 EEA, I need it's boot.img)

Installation:

1. Move custom ROM, firmware.zip and stock boot.img to internal storage or SD card (it's recommended to have SD card)

2. Boot to TWRP

3. Flash firmware.zip

4. Flash custom ROM 

5. Flash stock boot.img from your MIUI version.

6. In advanced tab flash current TWRP

7. Format data

8. Reboot to system

9. You have successfully flashed custom ROM

Gapps installation:
1. Gapps already included, no need to flash.

VoLTE steps:

1. Turn off wifi calling, video calling from mobile network settings.
2. Go to apn settings, click the three dots, reset apn to default.
3. Reboot device.
4. Now VoLTE will start working, you can even enable VoWifi Calling.